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Finding the Fourth Proportional to 88.78, 133.08 and 50.24

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Solution

The fourth proportional to 88.78, 133.08 and 50.24 is: 75.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.78 : 133.08 = 50.24 : x
  2. Step 2: Convert to fraction form
    88.78/133.08 = 50.24/x
  3. Step 3: Cross multiply
    88.78x = 133.08 × 50.24
  4. Step 4: Simplify right side
    88.78x = 6,685.94
  5. Step 5: Solve for x
    x = 6,685.94/88.78
  6. Step 6: Final answer
    x = 75.31

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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.