Question

por favor ayudenme doy 40 puntos
calcular la cuarta proporcional de 2, 3 y 4; 10, 20 y 30; 25, 30 y 50.

Answer 1

$\frac{2}{3} = \frac{4}{x}\\  \\x =\frac{4(3)}{2}\\\\x=\frac{12}{2}\\\\x = 6\\\\\\\frac{10}{20} = \frac{30}{x}\\  \\x =\frac{20(30)}{10}\\\\x=\frac{600}{10}\\\\x = 60\\\\\frac{25}{30} = \frac{50}{x}\\\\ x= \frac{50(30)}{25}\\\\x=\frac{1250}{25}\\  x=50$