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Finding the Fourth Proportional to 330.14, 495.52 and 252.86

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Solution

The fourth proportional to 330.14, 495.52 and 252.86 is: 379.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.14 : 495.52 = 252.86 : x
  2. Step 2: Convert to fraction form
    330.14/495.52 = 252.86/x
  3. Step 3: Cross multiply
    330.14x = 495.52 × 252.86
  4. Step 4: Simplify right side
    330.14x = 125,294.08
  5. Step 5: Solve for x
    x = 125,294.08/330.14
  6. Step 6: Final answer
    x = 379.52

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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.