Finding the Third Proportional to 308 and 721.50
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Solution
The third proportional to 308 and 721.50 is: 1,690.14
Step by Step Solution
- Step 1: Write the proportion equation
308 : 721.50 = 721.50 : x - Step 2: Convert to fraction form
308/721.50 = 721.50/x - Step 3: Cross multiply
308x = 721.50 × 721.50 - Step 4: Simplify right side
308x = 520,562.25 - Step 5: Solve for x
x = 520,562.25/308 - Step 6: Final answer
x = 1,690.14
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These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.