Finding the Third Proportional to 689 and 750.50
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Solution
The third proportional to 689 and 750.50 is: 817.49
Step by Step Solution
- Step 1: Write the proportion equation
689 : 750.50 = 750.50 : x - Step 2: Convert to fraction form
689/750.50 = 750.50/x - Step 3: Cross multiply
689x = 750.50 × 750.50 - Step 4: Simplify right side
689x = 563,250.25 - Step 5: Solve for x
x = 563,250.25/689 - Step 6: Final answer
x = 817.49
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Why These Related Problems?
These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.