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Finding the Fourth Proportional to 187.62, 281.52 and 126.61

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Solution

The fourth proportional to 187.62, 281.52 and 126.61 is: 189.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.62 : 281.52 = 126.61 : x
  2. Step 2: Convert to fraction form
    187.62/281.52 = 126.61/x
  3. Step 3: Cross multiply
    187.62x = 281.52 × 126.61
  4. Step 4: Simplify right side
    187.62x = 35,643.77
  5. Step 5: Solve for x
    x = 35,643.77/187.62
  6. Step 6: Final answer
    x = 189.98

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.