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Finding the Third Proportional to 493.88 and 763.13

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Solution

The third proportional to 493.88 and 763.13 is: 1,179.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.88 : 763.13 = 763.13 : x
  2. Step 2: Convert to fraction form
    493.88/763.13 = 763.13/x
  3. Step 3: Cross multiply
    493.88x = 763.13 × 763.13
  4. Step 4: Simplify right side
    493.88x = 582,359.77
  5. Step 5: Solve for x
    x = 582,359.77/493.88
  6. Step 6: Final answer
    x = 1,179.16

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.