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Finding the Fourth Proportional to 50.11, 75.17 and 15.87

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Solution

The fourth proportional to 50.11, 75.17 and 15.87 is: 23.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.11 : 75.17 = 15.87 : x
  2. Step 2: Convert to fraction form
    50.11/75.17 = 15.87/x
  3. Step 3: Cross multiply
    50.11x = 75.17 × 15.87
  4. Step 4: Simplify right side
    50.11x = 1,192.71
  5. Step 5: Solve for x
    x = 1,192.71/50.11
  6. Step 6: Final answer
    x = 23.80

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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.