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Finding the Fourth Proportional to 185.72, 256.27 and 102.83

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Solution

The fourth proportional to 185.72, 256.27 and 102.83 is: 141.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.72 : 256.27 = 102.83 : x
  2. Step 2: Convert to fraction form
    185.72/256.27 = 102.83/x
  3. Step 3: Cross multiply
    185.72x = 256.27 × 102.83
  4. Step 4: Simplify right side
    185.72x = 26,350.90
  5. Step 5: Solve for x
    x = 26,350.90/185.72
  6. Step 6: Final answer
    x = 141.88

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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.