Finding the Third Proportional to 686.25 and 1,508.63
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Solution
The third proportional to 686.25 and 1,508.63 is: 3,316.50
Step by Step Solution
- Step 1: Write the proportion equation
686.25 : 1,508.63 = 1,508.63 : x - Step 2: Convert to fraction form
686.25/1,508.63 = 1,508.63/x - Step 3: Cross multiply
686.25x = 1,508.63 × 1,508.63 - Step 4: Simplify right side
686.25x = 2,275,949.39 - Step 5: Solve for x
x = 2,275,949.39/686.25 - Step 6: Final answer
x = 3,316.50
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These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.