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Finding the Fourth Proportional to 252.92, 349.01 and 142.44

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Solution

The fourth proportional to 252.92, 349.01 and 142.44 is: 196.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.92 : 349.01 = 142.44 : x
  2. Step 2: Convert to fraction form
    252.92/349.01 = 142.44/x
  3. Step 3: Cross multiply
    252.92x = 349.01 × 142.44
  4. Step 4: Simplify right side
    252.92x = 49,711.50
  5. Step 5: Solve for x
    x = 49,711.50/252.92
  6. Step 6: Final answer
    x = 196.55

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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.