The mean proportional of 4 and 16 is:

A) +8

B) +16

C) +9

D) None of these

We have to find the mean proportion of 4 and 16.

we know the formula for mean proportion of two numbers x and y is square root of the product of x and y.

Mathematically, we can write

Here, we have x = 4 and y = 16

Hence, using the formula for mean proportion, we have