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Finding the Fourth Proportional to 542.44, 747.64 and 417.88

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Solution

The fourth proportional to 542.44, 747.64 and 417.88 is: 575.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.44 : 747.64 = 417.88 : x
  2. Step 2: Convert to fraction form
    542.44/747.64 = 417.88/x
  3. Step 3: Cross multiply
    542.44x = 747.64 × 417.88
  4. Step 4: Simplify right side
    542.44x = 312,423.80
  5. Step 5: Solve for x
    x = 312,423.80/542.44
  6. Step 6: Final answer
    x = 575.96

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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.