Find a third proportional of the numbers 3, 8.

Find a third proportional to the numbers 2.5, 1.5.

Find a fourth proportional to the numbers 2,5,4.

Find two numbers such that the mean proportional between them is 14 and third proportional to them is 112 .

Find the third proportional to : 36, 12

Find the third proportional to : 1.2, 0.6

Find two numbers such that the mean proportional between them is 12 and the third proportional to them is 96.

Find the third proportional to : 1 m 60 cm, 40 cm