Determine the mean proportional between the numbers 9 and 16.

A) 14

B) 15

C) 12

D) 8

Calculate the mean proportion between 125 and 5.

A) 25

B) 24

C) 26

D) 28

If the ratio of a to b is 3 to 4, and the ratio of b to c is 2 to 5, find the combined ratio of a, b, and c.

A) 3 : 2 : 5

B) 3 : 6 : 5

C) 3 : 4 :10

D) 2 : 3 : 4

Find the third proportional16 and 36.

A) 82

B) 81

C) 36

D) 63

If a : b = 2 : 3 and b : c = 2 : 4 then a: b : c?

A) 4 : 6 : 12

B) 2 : 6 : 4

C) 4 : 6 : 6

D) 6 : 12 : 4