The height ratio of a giraffe to a sika deer is 3:1, and the giraffe is 4.5 meters tall. How many meters tall is the sika deer? (Solve with ratio)
长颈鹿与梅花鹿的身高比是3：1，长颈鹿高4.5米，梅花鹿高多少米？(用比例解)
<gadget id="calculator">4.5 / 3</gadget>
<output>1.5</output>

<result>1.5</result>