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Finding the Fourth Proportional to 88.88, 132.59 and 79.74

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Solution

The fourth proportional to 88.88, 132.59 and 79.74 is: 118.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.88 : 132.59 = 79.74 : x
  2. Step 2: Convert to fraction form
    88.88/132.59 = 79.74/x
  3. Step 3: Cross multiply
    88.88x = 132.59 × 79.74
  4. Step 4: Simplify right side
    88.88x = 10,572.93
  5. Step 5: Solve for x
    x = 10,572.93/88.88
  6. Step 6: Final answer
    x = 118.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.