. Find :(i) Fourth proportional to 3, 7, 15.

Find : (i) the fourth proportional to 3 , 6 and 4.5 . (ii) the mean proportional between 6.25 and 0.16 . (iii) the third proportional to 1.2 and 1.8 .

Find the : (i) fourth proportional to 2xy , x^(2) and y^(2) . (ii) third proportional to a^(2) - b^(2) and a + b . (iii) mean proportion to (x - y) and (x^(3) - x^(2)y)

Find the fourth proportional to 12, 18, 20.

Find: the fourth proportional to 4,9,12

Find the fourth proportional to : 15, 6, 7

Find the fourth proportional to 12, 18, 20

Find the fourth proportional to : 4, 9, 32

Find the fourth proportional to : 0.6, 1.5, 3