# Are 15 45 40 and 120 in proportion yes or no?

### Table of Contents

- Are 15 45 40 and 120 in proportion yes or no?
- Are the ratios 25 30 40 48 in proportions?
- Are 16 8 and 4 in continued proportions?
- How do you find the continued proportion?
- How do you know if a number is in proportion?
- What is fourth proportion?
- What are the second and third terms of a proportion?
- Do the ratios 15 cm to 2 m and 10 seconds to 3 minutes form a proportion?
- Are 2 12 and 72 continued proportions?
- What is the mean proportion between 9 and 25?

### Are 15 45 40 and 120 in proportion yes or no?

Hence, 15, 45, 40, **120 are not proportion**.

### Are the ratios 25 30 40 48 in proportions?

Therefore, the ratios \[25g:**30g**\] and \[40g:48g\] are in proportion.

### Are 16 8 and 4 in continued proportions?

They are in **continued** prportion.

### How do you find the continued proportion?

Two ratios a: b and b: c is said to be in continued proportion if **a: b = b: c**. In this case, the term c is called the third proportion of a and b whereas b is called the mean proportion of between the terms a and c. Find out if the following ratios are in proportion: 8:10 and 12:15.

### How do you know if a number is in proportion?

Approach: If four numbers a, b, c and d are in proportion then a:**b = c:d**. The solution is to sort the four numbers and pair up the first 2 together and the last 2 together and check their ratios this is because, in order for them to be in proportion, the product of means has to be equal to the product of extremes.

### What is fourth proportion?

If a:b :: c:d or in other words a**:b = c: d**, then the quantity 'd' is what we call the fourth proportional to a, b and c. For example, if we have 2, 3 and 4, 5 are in the proportion such that 2 and 5 are the extremes, then 5 is the fourth proportional to 2, 3, and 4.

### What are the second and third terms of a proportion?

The first and fourth terms are called the extremes of the proportion. The second and third terms are called **the means of the proportion**. the terms a and d are the extremes; the terms b and c are the means.

### Do the ratios 15 cm to 2 m and 10 seconds to 3 minutes form a proportion?

As, r1≠r**2**, So, these two **ratios do** not **form a proportion**.

### Are 2 12 and 72 continued proportions?

∴ They are **continued** Proportion.

### What is the mean proportion between 9 and 25?

Solution : Let x be the mean proportional between 9 and 25. Hence, the mean proportional between 9 and 25 is **15**.