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Finding the Fourth Proportional to 534.72, 737.12 and 379.20

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Solution

The fourth proportional to 534.72, 737.12 and 379.20 is: 522.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.72 : 737.12 = 379.20 : x
  2. Step 2: Convert to fraction form
    534.72/737.12 = 379.20/x
  3. Step 3: Cross multiply
    534.72x = 737.12 × 379.20
  4. Step 4: Simplify right side
    534.72x = 279,515.90
  5. Step 5: Solve for x
    x = 279,515.90/534.72
  6. Step 6: Final answer
    x = 522.73

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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.