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Finding the Fourth Proportional to 413.31, 570.13 and 255.97

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Solution

The fourth proportional to 413.31, 570.13 and 255.97 is: 353.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.31 : 570.13 = 255.97 : x
  2. Step 2: Convert to fraction form
    413.31/570.13 = 255.97/x
  3. Step 3: Cross multiply
    413.31x = 570.13 × 255.97
  4. Step 4: Simplify right side
    413.31x = 145,934.11
  5. Step 5: Solve for x
    x = 145,934.11/413.31
  6. Step 6: Final answer
    x = 353.09

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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.