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Finding the Fourth Proportional to 257.52, 355.42 and 241.90

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Solution

The fourth proportional to 257.52, 355.42 and 241.90 is: 333.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    257.52 : 355.42 = 241.90 : x
  2. Step 2: Convert to fraction form
    257.52/355.42 = 241.90/x
  3. Step 3: Cross multiply
    257.52x = 355.42 × 241.90
  4. Step 4: Simplify right side
    257.52x = 85,976.10
  5. Step 5: Solve for x
    x = 85,976.10/257.52
  6. Step 6: Final answer
    x = 333.86

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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.