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Finding the Fourth Proportional to 251.28, 348.48 and 235.44

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Solution

The fourth proportional to 251.28, 348.48 and 235.44 is: 326.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.28 : 348.48 = 235.44 : x
  2. Step 2: Convert to fraction form
    251.28/348.48 = 235.44/x
  3. Step 3: Cross multiply
    251.28x = 348.48 × 235.44
  4. Step 4: Simplify right side
    251.28x = 82,046.13
  5. Step 5: Solve for x
    x = 82,046.13/251.28
  6. Step 6: Final answer
    x = 326.51

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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.