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Finding the Fourth Proportional to 344.34, 475.44 and 239.64

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Solution

The fourth proportional to 344.34, 475.44 and 239.64 is: 330.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.34 : 475.44 = 239.64 : x
  2. Step 2: Convert to fraction form
    344.34/475.44 = 239.64/x
  3. Step 3: Cross multiply
    344.34x = 475.44 × 239.64
  4. Step 4: Simplify right side
    344.34x = 113,934.44
  5. Step 5: Solve for x
    x = 113,934.44/344.34
  6. Step 6: Final answer
    x = 330.88

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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.