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Finding the Fourth Proportional to 416.23, 574.39 and 239.22

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Solution

The fourth proportional to 416.23, 574.39 and 239.22 is: 330.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.23 : 574.39 = 239.22 : x
  2. Step 2: Convert to fraction form
    416.23/574.39 = 239.22/x
  3. Step 3: Cross multiply
    416.23x = 574.39 × 239.22
  4. Step 4: Simplify right side
    416.23x = 137,404.38
  5. Step 5: Solve for x
    x = 137,404.38/416.23
  6. Step 6: Final answer
    x = 330.12

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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.