(i) \[\mathbf{3}:\text{ }\mathbf{4}\]
We know that
Triplicate ratio of \[3:\text{ }4\text{ }=\text{ }{{3}^{3}}:\text{ }{{4}^{3}}~=\text{ }27:\text{ }64\]
(ii) \[{\scriptscriptstyle 1\!/\!{ }_2}:\text{ }1/3\]
We know that
Triplicate ratio of \[{\scriptscriptstyle 1\!/\!{ }_2}:\text{ }1/3\text{ }=\text{ }{{\left( 1/2 \right)}^{3}}:\text{ }{{\left( 1/3 \right)}^{3}}~=\text{ }1/8:\text{ }1/27\text{ }=\text{ }27:\text{ }8\]