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Finding the Fourth Proportional to 413.22, 570.25 and 226.70

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Solution

The fourth proportional to 413.22, 570.25 and 226.70 is: 312.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.22 : 570.25 = 226.70 : x
  2. Step 2: Convert to fraction form
    413.22/570.25 = 226.70/x
  3. Step 3: Cross multiply
    413.22x = 570.25 × 226.70
  4. Step 4: Simplify right side
    413.22x = 129,275.68
  5. Step 5: Solve for x
    x = 129,275.68/413.22
  6. Step 6: Final answer
    x = 312.85

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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.