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Finding the Third Proportional to 747.21 and 1,475.30

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Solution

The third proportional to 747.21 and 1,475.30 is: 2,912.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.21 : 1,475.30 = 1,475.30 : x
  2. Step 2: Convert to fraction form
    747.21/1,475.30 = 1,475.30/x
  3. Step 3: Cross multiply
    747.21x = 1,475.30 × 1,475.30
  4. Step 4: Simplify right side
    747.21x = 2,176,500.87
  5. Step 5: Solve for x
    x = 2,176,500.87/747.21
  6. Step 6: Final answer
    x = 2,912.83

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.