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Finding the Fourth Proportional to 99.52, 136.62 and 98.32

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Solution

The fourth proportional to 99.52, 136.62 and 98.32 is: 134.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.52 : 136.62 = 98.32 : x
  2. Step 2: Convert to fraction form
    99.52/136.62 = 98.32/x
  3. Step 3: Cross multiply
    99.52x = 136.62 × 98.32
  4. Step 4: Simplify right side
    99.52x = 13,432.48
  5. Step 5: Solve for x
    x = 13,432.48/99.52
  6. Step 6: Final answer
    x = 134.97

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.