Find the ratio compounded of the reciprocal ratio of 15 : 28, the sub -duplicate ratio of 36 : 49 and the triplicate ratio of 5 :4.
Reciprocal ratio of
15:28 = 28:15
sub duplicate ratio of 36:49
√36:√49=6:7
triplicate ratio of 5:4
53:43=125:64
required compound ratio =28×6×12515×7×64
=258
=258