Question

The mean proportional of 16 and 144 is

• A. 36
• B. 34
• C. 44
• D. 48

Answer 1

Answer:

D. 48

The mean proportional of 16 and 144 is 48.

To find the mean proportional between two numbers, you calculate the square root of their product using the formula:
$\text{Mean Proportional} = \sqrt{a \times b}$

• Given numbers: $a = \mathbf{16}$ and $b = \mathbf{144}$

• $\text{Mean Proportional} = \sqrt{16 \times 144}$

• $\text{Mean Proportional} = \sqrt{16} \times \sqrt{144}$

• $\text{Mean Proportional} = 4 \times 12 = \mathbf{48}$