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Finding the Fourth Proportional to 347.17, 476.90 and 329.62

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Solution

The fourth proportional to 347.17, 476.90 and 329.62 is: 452.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.17 : 476.90 = 329.62 : x
  2. Step 2: Convert to fraction form
    347.17/476.90 = 329.62/x
  3. Step 3: Cross multiply
    347.17x = 476.90 × 329.62
  4. Step 4: Simplify right side
    347.17x = 157,195.78
  5. Step 5: Solve for x
    x = 157,195.78/347.17
  6. Step 6: Final answer
    x = 452.79

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.