Answer
False
Work Step by Step
To determine if a proportion is true, we have to find if the cross products are equal.
The cross products of $\frac{a}{b}=\frac{c}{d}$ are $a \cdot d$ and $b \cdot c$.
$0.8*0.6=0.48, 0.2*0.3=0.06, 0.48 \neq 0.06 \rightarrow$ false