The mean proportional (also known as the geometric mean) between two numbers, a and b, is the square root of their product.

So, to find the mean proportional between 64 and 81, we need to calculate the square root of (64*81).

Step 1: Multiply 64 and 81.
64 * 81 = 5184

Step 2: Find the square root of 5184.
The square root of 5184 is 72.

So, the mean proportional between 64 and 81 is 72. Therefore, the correct answer from the given options is 72.

Question

The mean proportional (also known as the geometric mean) between two numbers, a and b, is the square root of their product.

So, to find the mean proportional between 64 and 81, we need to calculate the square root of (64*81).

Step 1: Multiply 64 and 81.
64 * 81 = 5184

Step 2: Find the square root of 5184.
The square root of 5184 is 72.

So, the mean proportional between 64 and 81 is 72. Therefore, the correct answer from the given options is 72.

Knowee AI · Accepted Answer

The mean proportional (also known as the geometric mean) between two numbers, a and b, is the square root of their product.

So, to find the mean proportional between 64 and 81, we need to calculate the square root of (64*81).

Step 1: Multiply 64 and 81.
64 * 81 = 5184

Step 2: Find the square root of 5184.
The square root of 5184 is 72.

So, the mean proportional between 64 and 81 is 72. Therefore, the correct answer from the given options is 72.

Select the correct answerThe mean proportional between 64 and 81Options486182772