Question

What is the fourth proportional of 0.006, 1.2 & 6/25?

Answer 1

Answer:

$\frac{0.006}{1.2} = \frac{ \frac{6}{25} }{x} \\ 0.006x = \frac{6}{25} \times 1.2 \\ x = \frac{6}{25} \times \frac{1.2}{0.006} \\ = \frac{6 \times 12 \times 1000}{25 \times 6 \times 10} \\ = \frac{12 \times 4}{1} \\ = 48$