Question

find the 4th proportional to
a) 3,12 and 4
b)4hrs 40 min, 1 hr 10 min and 16 hours

Answer 1

Answer:

1. 16 2. 64 hours

Step-by-step explanation:

1. 3:12 and 4: x

so, x = 4*12/3

= 16

2. 4hrs 40 min:1 hr 10 min : :16 hours : x

280 min : 70 min = 960 min : x

so, x =960*4 min

=64hours