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Finding the Fourth Proportional to 257.44, 385.68 and 250.24

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Solution

The fourth proportional to 257.44, 385.68 and 250.24 is: 374.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    257.44 : 385.68 = 250.24 : x
  2. Step 2: Convert to fraction form
    257.44/385.68 = 250.24/x
  3. Step 3: Cross multiply
    257.44x = 385.68 × 250.24
  4. Step 4: Simplify right side
    257.44x = 96,512.56
  5. Step 5: Solve for x
    x = 96,512.56/257.44
  6. Step 6: Final answer
    x = 374.89

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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.