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Finding the Third Proportional to 493.31 and 769.22

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Solution

The third proportional to 493.31 and 769.22 is: 1,199.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.31 : 769.22 = 769.22 : x
  2. Step 2: Convert to fraction form
    493.31/769.22 = 769.22/x
  3. Step 3: Cross multiply
    493.31x = 769.22 × 769.22
  4. Step 4: Simplify right side
    493.31x = 591,697.49
  5. Step 5: Solve for x
    x = 591,697.49/493.31
  6. Step 6: Final answer
    x = 1,199.44

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.