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Finding the Fourth Proportional to 98.28, 136.17 and 96.12

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Solution

The fourth proportional to 98.28, 136.17 and 96.12 is: 133.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.28 : 136.17 = 96.12 : x
  2. Step 2: Convert to fraction form
    98.28/136.17 = 96.12/x
  3. Step 3: Cross multiply
    98.28x = 136.17 × 96.12
  4. Step 4: Simplify right side
    98.28x = 13,088.66
  5. Step 5: Solve for x
    x = 13,088.66/98.28
  6. Step 6: Final answer
    x = 133.18

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.