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Finding the Fourth Proportional to 524.72, 724.11 and 291.85

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Solution

The fourth proportional to 524.72, 724.11 and 291.85 is: 402.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.72 : 724.11 = 291.85 : x
  2. Step 2: Convert to fraction form
    524.72/724.11 = 291.85/x
  3. Step 3: Cross multiply
    524.72x = 724.11 × 291.85
  4. Step 4: Simplify right side
    524.72x = 211,327.88
  5. Step 5: Solve for x
    x = 211,327.88/524.72
  6. Step 6: Final answer
    x = 402.74

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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.