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Finding the Fourth Proportional to 736.87, 1,105.38 and 268.47

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Solution

The fourth proportional to 736.87, 1,105.38 and 268.47 is: 402.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.87 : 1,105.38 = 268.47 : x
  2. Step 2: Convert to fraction form
    736.87/1,105.38 = 268.47/x
  3. Step 3: Cross multiply
    736.87x = 1,105.38 × 268.47
  4. Step 4: Simplify right side
    736.87x = 296,760.61
  5. Step 5: Solve for x
    x = 296,760.61/736.87
  6. Step 6: Final answer
    x = 402.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.