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Finding the Fourth Proportional to 95.40, 132.20 and 93.58

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Solution

The fourth proportional to 95.40, 132.20 and 93.58 is: 129.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.40 : 132.20 = 93.58 : x
  2. Step 2: Convert to fraction form
    95.40/132.20 = 93.58/x
  3. Step 3: Cross multiply
    95.40x = 132.20 × 93.58
  4. Step 4: Simplify right side
    95.40x = 12,370.62
  5. Step 5: Solve for x
    x = 12,370.62/95.40
  6. Step 6: Final answer
    x = 129.68

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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.