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Finding the Fourth Proportional to 57.11, 78.82 and 32.56

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Solution

The fourth proportional to 57.11, 78.82 and 32.56 is: 44.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.11 : 78.82 = 32.56 : x
  2. Step 2: Convert to fraction form
    57.11/78.82 = 32.56/x
  3. Step 3: Cross multiply
    57.11x = 78.82 × 32.56
  4. Step 4: Simplify right side
    57.11x = 2,566.13
  5. Step 5: Solve for x
    x = 2,566.13/57.11
  6. Step 6: Final answer
    x = 44.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.