Question

the third proportional to 0.8 and 0.2 is

Answer 1

Let.
The third proportion be X

•°• 0.8 : 0.2 = 0.2 : X

=> 0.8/0.2 = 0.2/X

=> 0.8 X = 0.2 × 0.2

=> 0.8 X = 0.04

=> X = 0.04/0.8

•°• X = 0.05

Hence,
The third proportion is 0.05.