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Finding the Fourth Proportional to 54.55, 75.25 and 32.71

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Solution

The fourth proportional to 54.55, 75.25 and 32.71 is: 45.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.55 : 75.25 = 32.71 : x
  2. Step 2: Convert to fraction form
    54.55/75.25 = 32.71/x
  3. Step 3: Cross multiply
    54.55x = 75.25 × 32.71
  4. Step 4: Simplify right side
    54.55x = 2,461.05
  5. Step 5: Solve for x
    x = 2,461.05/54.55
  6. Step 6: Final answer
    x = 45.12

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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.