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Finding the Fourth Proportional to 344.18, 474.88 and 239.15

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Solution

The fourth proportional to 344.18, 474.88 and 239.15 is: 329.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.18 : 474.88 = 239.15 : x
  2. Step 2: Convert to fraction form
    344.18/474.88 = 239.15/x
  3. Step 3: Cross multiply
    344.18x = 474.88 × 239.15
  4. Step 4: Simplify right side
    344.18x = 113,568.59
  5. Step 5: Solve for x
    x = 113,568.59/344.18
  6. Step 6: Final answer
    x = 329.97

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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.