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Finding the Fourth Proportional to 40.75, 56.12 and 32.54

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Solution

The fourth proportional to 40.75, 56.12 and 32.54 is: 44.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.75 : 56.12 = 32.54 : x
  2. Step 2: Convert to fraction form
    40.75/56.12 = 32.54/x
  3. Step 3: Cross multiply
    40.75x = 56.12 × 32.54
  4. Step 4: Simplify right side
    40.75x = 1,825.70
  5. Step 5: Solve for x
    x = 1,825.70/40.75
  6. Step 6: Final answer
    x = 44.81

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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.