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Finding the Fourth Proportional to 88.92, 132.84 and 74.28

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Solution

The fourth proportional to 88.92, 132.84 and 74.28 is: 110.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.92 : 132.84 = 74.28 : x
  2. Step 2: Convert to fraction form
    88.92/132.84 = 74.28/x
  3. Step 3: Cross multiply
    88.92x = 132.84 × 74.28
  4. Step 4: Simplify right side
    88.92x = 9,867.36
  5. Step 5: Solve for x
    x = 9,867.36/88.92
  6. Step 6: Final answer
    x = 110.97

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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.