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Finding the Fourth Proportional to 251.96, 345.10 and 237.20

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Solution

The fourth proportional to 251.96, 345.10 and 237.20 is: 324.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.96 : 345.10 = 237.20 : x
  2. Step 2: Convert to fraction form
    251.96/345.10 = 237.20/x
  3. Step 3: Cross multiply
    251.96x = 345.10 × 237.20
  4. Step 4: Simplify right side
    251.96x = 81,857.72
  5. Step 5: Solve for x
    x = 81,857.72/251.96
  6. Step 6: Final answer
    x = 324.88

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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.