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Finding the Fourth Proportional to 457.72, 686.88 and 241.48

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Solution

The fourth proportional to 457.72, 686.88 and 241.48 is: 362.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.72 : 686.88 = 241.48 : x
  2. Step 2: Convert to fraction form
    457.72/686.88 = 241.48/x
  3. Step 3: Cross multiply
    457.72x = 686.88 × 241.48
  4. Step 4: Simplify right side
    457.72x = 165,867.78
  5. Step 5: Solve for x
    x = 165,867.78/457.72
  6. Step 6: Final answer
    x = 362.38

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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.