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Finding the Fourth Proportional to 413.96, 571.27 and 227.47

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Solution

The fourth proportional to 413.96, 571.27 and 227.47 is: 313.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.96 : 571.27 = 227.47 : x
  2. Step 2: Convert to fraction form
    413.96/571.27 = 227.47/x
  3. Step 3: Cross multiply
    413.96x = 571.27 × 227.47
  4. Step 4: Simplify right side
    413.96x = 129,946.79
  5. Step 5: Solve for x
    x = 129,946.79/413.96
  6. Step 6: Final answer
    x = 313.91

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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.