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Finding the Fourth Proportional to 239.63, 330.69 and 224.95

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Solution

The fourth proportional to 239.63, 330.69 and 224.95 is: 310.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.63 : 330.69 = 224.95 : x
  2. Step 2: Convert to fraction form
    239.63/330.69 = 224.95/x
  3. Step 3: Cross multiply
    239.63x = 330.69 × 224.95
  4. Step 4: Simplify right side
    239.63x = 74,388.73
  5. Step 5: Solve for x
    x = 74,388.73/239.63
  6. Step 6: Final answer
    x = 310.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.