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Finding the Fourth Proportional to 251.32, 375.48 and 239.98

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Solution

The fourth proportional to 251.32, 375.48 and 239.98 is: 358.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.32 : 375.48 = 239.98 : x
  2. Step 2: Convert to fraction form
    251.32/375.48 = 239.98/x
  3. Step 3: Cross multiply
    251.32x = 375.48 × 239.98
  4. Step 4: Simplify right side
    251.32x = 90,107.69
  5. Step 5: Solve for x
    x = 90,107.69/251.32
  6. Step 6: Final answer
    x = 358.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.