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Finding the Fourth Proportional to 343.25, 515.28 and 329.33

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Solution

The fourth proportional to 343.25, 515.28 and 329.33 is: 494.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.25 : 515.28 = 329.33 : x
  2. Step 2: Convert to fraction form
    343.25/515.28 = 329.33/x
  3. Step 3: Cross multiply
    343.25x = 515.28 × 329.33
  4. Step 4: Simplify right side
    343.25x = 169,694.59
  5. Step 5: Solve for x
    x = 169,694.59/343.25
  6. Step 6: Final answer
    x = 494.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.