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Finding the Fourth Proportional to 49.26, 67.92 and 32.86

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Solution

The fourth proportional to 49.26, 67.92 and 32.86 is: 45.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.26 : 67.92 = 32.86 : x
  2. Step 2: Convert to fraction form
    49.26/67.92 = 32.86/x
  3. Step 3: Cross multiply
    49.26x = 67.92 × 32.86
  4. Step 4: Simplify right side
    49.26x = 2,231.85
  5. Step 5: Solve for x
    x = 2,231.85/49.26
  6. Step 6: Final answer
    x = 45.31

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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.