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Finding the Fourth Proportional to 731.90, 1,098.26 and 347.14

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Solution

The fourth proportional to 731.90, 1,098.26 and 347.14 is: 520.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.90 : 1,098.26 = 347.14 : x
  2. Step 2: Convert to fraction form
    731.90/1,098.26 = 347.14/x
  3. Step 3: Cross multiply
    731.90x = 1,098.26 × 347.14
  4. Step 4: Simplify right side
    731.90x = 381,249.98
  5. Step 5: Solve for x
    x = 381,249.98/731.90
  6. Step 6: Final answer
    x = 520.90

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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.