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Finding the Fourth Proportional to 57.05, 85.16 and 50.97

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Solution

The fourth proportional to 57.05, 85.16 and 50.97 is: 76.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.05 : 85.16 = 50.97 : x
  2. Step 2: Convert to fraction form
    57.05/85.16 = 50.97/x
  3. Step 3: Cross multiply
    57.05x = 85.16 × 50.97
  4. Step 4: Simplify right side
    57.05x = 4,340.35
  5. Step 5: Solve for x
    x = 4,340.35/57.05
  6. Step 6: Final answer
    x = 76.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.