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Finding the Fourth Proportional to 97.32, 134.20 and 64.52

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Solution

The fourth proportional to 97.32, 134.20 and 64.52 is: 88.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.32 : 134.20 = 64.52 : x
  2. Step 2: Convert to fraction form
    97.32/134.20 = 64.52/x
  3. Step 3: Cross multiply
    97.32x = 134.20 × 64.52
  4. Step 4: Simplify right side
    97.32x = 8,658.58
  5. Step 5: Solve for x
    x = 8,658.58/97.32
  6. Step 6: Final answer
    x = 88.97

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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.