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Finding the Fourth Proportional to 1,337.29, 1,845.34 and 747.70

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Solution

The fourth proportional to 1,337.29, 1,845.34 and 747.70 is: 1,031.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,337.29 : 1,845.34 = 747.70 : x
  2. Step 2: Convert to fraction form
    1,337.29/1,845.34 = 747.70/x
  3. Step 3: Cross multiply
    1,337.29x = 1,845.34 × 747.70
  4. Step 4: Simplify right side
    1,337.29x = 1,379,754.24
  5. Step 5: Solve for x
    x = 1,379,754.24/1,337.29
  6. Step 6: Final answer
    x = 1,031.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.