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Finding the Fourth Proportional to 440.22, 606.87 and 308.82

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Solution

The fourth proportional to 440.22, 606.87 and 308.82 is: 425.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.22 : 606.87 = 308.82 : x
  2. Step 2: Convert to fraction form
    440.22/606.87 = 308.82/x
  3. Step 3: Cross multiply
    440.22x = 606.87 × 308.82
  4. Step 4: Simplify right side
    440.22x = 187,413.59
  5. Step 5: Solve for x
    x = 187,413.59/440.22
  6. Step 6: Final answer
    x = 425.73

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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.