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Finding the Fourth Proportional to 187.85, 281.41 and 136.62

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Solution

The fourth proportional to 187.85, 281.41 and 136.62 is: 204.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.85 : 281.41 = 136.62 : x
  2. Step 2: Convert to fraction form
    187.85/281.41 = 136.62/x
  3. Step 3: Cross multiply
    187.85x = 281.41 × 136.62
  4. Step 4: Simplify right side
    187.85x = 38,445.89
  5. Step 5: Solve for x
    x = 38,445.89/187.85
  6. Step 6: Final answer
    x = 204.66

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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.