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Finding the Fourth Proportional to 343.68, 475.11 and 329.19

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Solution

The fourth proportional to 343.68, 475.11 and 329.19 is: 455.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.68 : 475.11 = 329.19 : x
  2. Step 2: Convert to fraction form
    343.68/475.11 = 329.19/x
  3. Step 3: Cross multiply
    343.68x = 475.11 × 329.19
  4. Step 4: Simplify right side
    343.68x = 156,401.46
  5. Step 5: Solve for x
    x = 156,401.46/343.68
  6. Step 6: Final answer
    x = 455.08

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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.