Question

· Find the fourth proportional to the numbers 42, 18 and 7.​

Answer 1

$\frac{42}{18} =\frac{7}{x} \\\frac{7}{3} = \frac{7}{x} \\x =\frac{7*3}{7} \\x = 3$

Answer 2

$\huge\mathfrak\pink{Hello!!♡}$

$\sf{= > \frac{42}{18} \times \frac{7}{x}}$

$\sf{ => \frac{7}{3} \times \frac{7}{x}}$

$\sf{x = \frac{7 \times 3}{7}}$

$\sf{x = 3}$