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Finding the Fourth Proportional to 344.63, 475.31 and 239.71

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Solution

The fourth proportional to 344.63, 475.31 and 239.71 is: 330.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.63 : 475.31 = 239.71 : x
  2. Step 2: Convert to fraction form
    344.63/475.31 = 239.71/x
  3. Step 3: Cross multiply
    344.63x = 475.31 × 239.71
  4. Step 4: Simplify right side
    344.63x = 113,935.97
  5. Step 5: Solve for x
    x = 113,935.97/344.63
  6. Step 6: Final answer
    x = 330.61

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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.