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Finding the Fourth Proportional to 97.38, 134.66 and 93.08

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Solution

The fourth proportional to 97.38, 134.66 and 93.08 is: 128.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.38 : 134.66 = 93.08 : x
  2. Step 2: Convert to fraction form
    97.38/134.66 = 93.08/x
  3. Step 3: Cross multiply
    97.38x = 134.66 × 93.08
  4. Step 4: Simplify right side
    97.38x = 12,534.15
  5. Step 5: Solve for x
    x = 12,534.15/97.38
  6. Step 6: Final answer
    x = 128.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.