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Finding the Fourth Proportional to 188.10, 281.87 and 116.02

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Solution

The fourth proportional to 188.10, 281.87 and 116.02 is: 173.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.10 : 281.87 = 116.02 : x
  2. Step 2: Convert to fraction form
    188.10/281.87 = 116.02/x
  3. Step 3: Cross multiply
    188.10x = 281.87 × 116.02
  4. Step 4: Simplify right side
    188.10x = 32,702.56
  5. Step 5: Solve for x
    x = 32,702.56/188.10
  6. Step 6: Final answer
    x = 173.86

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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.