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Finding the Fourth Proportional to 343.29, 474.13 and 338.75

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Solution

The fourth proportional to 343.29, 474.13 and 338.75 is: 467.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.29 : 474.13 = 338.75 : x
  2. Step 2: Convert to fraction form
    343.29/474.13 = 338.75/x
  3. Step 3: Cross multiply
    343.29x = 474.13 × 338.75
  4. Step 4: Simplify right side
    343.29x = 160,611.54
  5. Step 5: Solve for x
    x = 160,611.54/343.29
  6. Step 6: Final answer
    x = 467.86

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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.