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Finding the Fourth Proportional to 251.96, 372.80 and 251.24

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Solution

The fourth proportional to 251.96, 372.80 and 251.24 is: 371.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.96 : 372.80 = 251.24 : x
  2. Step 2: Convert to fraction form
    251.96/372.80 = 251.24/x
  3. Step 3: Cross multiply
    251.96x = 372.80 × 251.24
  4. Step 4: Simplify right side
    251.96x = 93,662.27
  5. Step 5: Solve for x
    x = 93,662.27/251.96
  6. Step 6: Final answer
    x = 371.73

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.