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Finding the Third Proportional to 723.75 and 814.88

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Solution

The third proportional to 723.75 and 814.88 is: 917.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.75 : 814.88 = 814.88 : x
  2. Step 2: Convert to fraction form
    723.75/814.88 = 814.88/x
  3. Step 3: Cross multiply
    723.75x = 814.88 × 814.88
  4. Step 4: Simplify right side
    723.75x = 664,021.27
  5. Step 5: Solve for x
    x = 664,021.27/723.75
  6. Step 6: Final answer
    x = 917.47

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.