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Finding the Fourth Proportional to 50.75, 76.12 and 27.94

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Solution

The fourth proportional to 50.75, 76.12 and 27.94 is: 41.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.75 : 76.12 = 27.94 : x
  2. Step 2: Convert to fraction form
    50.75/76.12 = 27.94/x
  3. Step 3: Cross multiply
    50.75x = 76.12 × 27.94
  4. Step 4: Simplify right side
    50.75x = 2,126.79
  5. Step 5: Solve for x
    x = 2,126.79/50.75
  6. Step 6: Final answer
    x = 41.91

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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.