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Finding the Fourth Proportional to 343.35, 474 and 238.62

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Solution

The fourth proportional to 343.35, 474 and 238.62 is: 329.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.35 : 474 = 238.62 : x
  2. Step 2: Convert to fraction form
    343.35/474 = 238.62/x
  3. Step 3: Cross multiply
    343.35x = 474 × 238.62
  4. Step 4: Simplify right side
    343.35x = 113,105.88
  5. Step 5: Solve for x
    x = 113,105.88/343.35
  6. Step 6: Final answer
    x = 329.42

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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.