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Finding the Fourth Proportional to 187.92, 281.88 and 56.13

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Solution

The fourth proportional to 187.92, 281.88 and 56.13 is: 84.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.92 : 281.88 = 56.13 : x
  2. Step 2: Convert to fraction form
    187.92/281.88 = 56.13/x
  3. Step 3: Cross multiply
    187.92x = 281.88 × 56.13
  4. Step 4: Simplify right side
    187.92x = 15,821.92
  5. Step 5: Solve for x
    x = 15,821.92/187.92
  6. Step 6: Final answer
    x = 84.20

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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.