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Finding the Fourth Proportional to 416.17, 574.31 and 239.13

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Solution

The fourth proportional to 416.17, 574.31 and 239.13 is: 329.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.17 : 574.31 = 239.13 : x
  2. Step 2: Convert to fraction form
    416.17/574.31 = 239.13/x
  3. Step 3: Cross multiply
    416.17x = 574.31 × 239.13
  4. Step 4: Simplify right side
    416.17x = 137,333.55
  5. Step 5: Solve for x
    x = 137,333.55/416.17
  6. Step 6: Final answer
    x = 329.99

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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.