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Finding the Fourth Proportional to 468.60, 702.84 and 126.60

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Solution

The fourth proportional to 468.60, 702.84 and 126.60 is: 189.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.60 : 702.84 = 126.60 : x
  2. Step 2: Convert to fraction form
    468.60/702.84 = 126.60/x
  3. Step 3: Cross multiply
    468.60x = 702.84 × 126.60
  4. Step 4: Simplify right side
    468.60x = 88,979.54
  5. Step 5: Solve for x
    x = 88,979.54/468.60
  6. Step 6: Final answer
    x = 189.88

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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.