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Finding the Fourth Proportional to 57.32, 85.72 and 41.94

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Solution

The fourth proportional to 57.32, 85.72 and 41.94 is: 62.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.32 : 85.72 = 41.94 : x
  2. Step 2: Convert to fraction form
    57.32/85.72 = 41.94/x
  3. Step 3: Cross multiply
    57.32x = 85.72 × 41.94
  4. Step 4: Simplify right side
    57.32x = 3,595.10
  5. Step 5: Solve for x
    x = 3,595.10/57.32
  6. Step 6: Final answer
    x = 62.72

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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.