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Finding the Fourth Proportional to 251.36, 345.24 and 247.76

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Solution

The fourth proportional to 251.36, 345.24 and 247.76 is: 340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.36 : 345.24 = 247.76 : x
  2. Step 2: Convert to fraction form
    251.36/345.24 = 247.76/x
  3. Step 3: Cross multiply
    251.36x = 345.24 × 247.76
  4. Step 4: Simplify right side
    251.36x = 85,536.66
  5. Step 5: Solve for x
    x = 85,536.66/251.36
  6. Step 6: Final answer
    x = 340.30

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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.