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Finding the Fourth Proportional to 34.13, 51.02 and 27.28

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Solution

The fourth proportional to 34.13, 51.02 and 27.28 is: 40.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.13 : 51.02 = 27.28 : x
  2. Step 2: Convert to fraction form
    34.13/51.02 = 27.28/x
  3. Step 3: Cross multiply
    34.13x = 51.02 × 27.28
  4. Step 4: Simplify right side
    34.13x = 1,391.86
  5. Step 5: Solve for x
    x = 1,391.86/34.13
  6. Step 6: Final answer
    x = 40.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.