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Finding the Fourth Proportional to 252.78, 349.17 and 187.62

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Solution

The fourth proportional to 252.78, 349.17 and 187.62 is: 259.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.78 : 349.17 = 187.62 : x
  2. Step 2: Convert to fraction form
    252.78/349.17 = 187.62/x
  3. Step 3: Cross multiply
    252.78x = 349.17 × 187.62
  4. Step 4: Simplify right side
    252.78x = 65,511.28
  5. Step 5: Solve for x
    x = 65,511.28/252.78
  6. Step 6: Final answer
    x = 259.16

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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.