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Finding the Fourth Proportional to 97.64, 133.72 and 92.03

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Solution

The fourth proportional to 97.64, 133.72 and 92.03 is: 126.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.64 : 133.72 = 92.03 : x
  2. Step 2: Convert to fraction form
    97.64/133.72 = 92.03/x
  3. Step 3: Cross multiply
    97.64x = 133.72 × 92.03
  4. Step 4: Simplify right side
    97.64x = 12,306.25
  5. Step 5: Solve for x
    x = 12,306.25/97.64
  6. Step 6: Final answer
    x = 126.04

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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.