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Finding the Fourth Proportional to 413.77, 571.02 and 227.26

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Solution

The fourth proportional to 413.77, 571.02 and 227.26 is: 313.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.77 : 571.02 = 227.26 : x
  2. Step 2: Convert to fraction form
    413.77/571.02 = 227.26/x
  3. Step 3: Cross multiply
    413.77x = 571.02 × 227.26
  4. Step 4: Simplify right side
    413.77x = 129,768.87
  5. Step 5: Solve for x
    x = 129,768.87/413.77
  6. Step 6: Final answer
    x = 313.63

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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.