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Finding the Fourth Proportional to 538.72, 742.85 and 363.76

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Solution

The fourth proportional to 538.72, 742.85 and 363.76 is: 501.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.72 : 742.85 = 363.76 : x
  2. Step 2: Convert to fraction form
    538.72/742.85 = 363.76/x
  3. Step 3: Cross multiply
    538.72x = 742.85 × 363.76
  4. Step 4: Simplify right side
    538.72x = 270,217.30
  5. Step 5: Solve for x
    x = 270,217.30/538.72
  6. Step 6: Final answer
    x = 501.59

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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.