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Finding the Fourth Proportional to 88.92, 132.39 and 83.91

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Solution

The fourth proportional to 88.92, 132.39 and 83.91 is: 124.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.92 : 132.39 = 83.91 : x
  2. Step 2: Convert to fraction form
    88.92/132.39 = 83.91/x
  3. Step 3: Cross multiply
    88.92x = 132.39 × 83.91
  4. Step 4: Simplify right side
    88.92x = 11,108.84
  5. Step 5: Solve for x
    x = 11,108.84/88.92
  6. Step 6: Final answer
    x = 124.93

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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.