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Finding the Fourth Proportional to 88.83, 133.92 and 83.84

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Solution

The fourth proportional to 88.83, 133.92 and 83.84 is: 126.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.83 : 133.92 = 83.84 : x
  2. Step 2: Convert to fraction form
    88.83/133.92 = 83.84/x
  3. Step 3: Cross multiply
    88.83x = 133.92 × 83.84
  4. Step 4: Simplify right side
    88.83x = 11,227.18
  5. Step 5: Solve for x
    x = 11,227.18/88.83
  6. Step 6: Final answer
    x = 126.39

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.