The ratio of h to g is
[tex]\frac{g}{h}=\frac{0.25}{4}[/tex]Therefore, when h = 0.3
[tex]\frac{g}{0.3}=\frac{0.25}{4}[/tex]multiplying both sides by 0.3 gives
[tex]g=\frac{0.25}{4}\cdot0.3[/tex][tex]\begin{gathered} g=0.01875=\frac{3}{160} \\ \end{gathered}[/tex]