Mathematics
Find the fourth proportional to : (i) 3, 12, 15 (ii) (iii) 1.5, 2.5, 4.5 (iv) 9.6 kg, 7.2 kg, 28.8 kg.
Related Questions
In an examination, the ratio of passes to failures was 4 : 1. If 30 less had appeared and 20 less passed, the ratio of passes to failures would have been 5 : 1. How many students appeared for the examination?
Find the value of x in the following proportions :
(i) 10 : 35 = x : 42
(ii) 3 : x = 24 : 2
(iii) 2.5 : 1.5 = x : 3
(iv) x : 50 :: 3 : 2.