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Finding the Fourth Proportional to 39.06, 54.17 and 37.68

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Solution

The fourth proportional to 39.06, 54.17 and 37.68 is: 52.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.06 : 54.17 = 37.68 : x
  2. Step 2: Convert to fraction form
    39.06/54.17 = 37.68/x
  3. Step 3: Cross multiply
    39.06x = 54.17 × 37.68
  4. Step 4: Simplify right side
    39.06x = 2,040.94
  5. Step 5: Solve for x
    x = 2,040.94/39.06
  6. Step 6: Final answer
    x = 52.25

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.