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Finding the Fourth Proportional to 251.26, 344.87 and 240.70

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Solution

The fourth proportional to 251.26, 344.87 and 240.70 is: 330.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.26 : 344.87 = 240.70 : x
  2. Step 2: Convert to fraction form
    251.26/344.87 = 240.70/x
  3. Step 3: Cross multiply
    251.26x = 344.87 × 240.70
  4. Step 4: Simplify right side
    251.26x = 83,010.21
  5. Step 5: Solve for x
    x = 83,010.21/251.26
  6. Step 6: Final answer
    x = 330.38

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.