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Finding the Fourth Proportional to 88.97, 133.40 and 50.39

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Solution

The fourth proportional to 88.97, 133.40 and 50.39 is: 75.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.97 : 133.40 = 50.39 : x
  2. Step 2: Convert to fraction form
    88.97/133.40 = 50.39/x
  3. Step 3: Cross multiply
    88.97x = 133.40 × 50.39
  4. Step 4: Simplify right side
    88.97x = 6,721.70
  5. Step 5: Solve for x
    x = 6,721.70/88.97
  6. Step 6: Final answer
    x = 75.55

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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.