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Finding the Fourth Proportional to 34.49, 51.69 and 31.27

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Solution

The fourth proportional to 34.49, 51.69 and 31.27 is: 46.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.49 : 51.69 = 31.27 : x
  2. Step 2: Convert to fraction form
    34.49/51.69 = 31.27/x
  3. Step 3: Cross multiply
    34.49x = 51.69 × 31.27
  4. Step 4: Simplify right side
    34.49x = 1,616.20
  5. Step 5: Solve for x
    x = 1,616.20/34.49
  6. Step 6: Final answer
    x = 46.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.