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Finding the Fourth Proportional to 416.61, 574.43 and 379.62

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Solution

The fourth proportional to 416.61, 574.43 and 379.62 is: 523.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.61 : 574.43 = 379.62 : x
  2. Step 2: Convert to fraction form
    416.61/574.43 = 379.62/x
  3. Step 3: Cross multiply
    416.61x = 574.43 × 379.62
  4. Step 4: Simplify right side
    416.61x = 218,063.22
  5. Step 5: Solve for x
    x = 218,063.22/416.61
  6. Step 6: Final answer
    x = 523.42

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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.