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Finding the Fourth Proportional to 88.42, 132.56 and 55.95

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Solution

The fourth proportional to 88.42, 132.56 and 55.95 is: 83.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.42 : 132.56 = 55.95 : x
  2. Step 2: Convert to fraction form
    88.42/132.56 = 55.95/x
  3. Step 3: Cross multiply
    88.42x = 132.56 × 55.95
  4. Step 4: Simplify right side
    88.42x = 7,416.73
  5. Step 5: Solve for x
    x = 7,416.73/88.42
  6. Step 6: Final answer
    x = 83.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.