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Finding the Fourth Proportional to 294.89, 406.97 and 163.92

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Solution

The fourth proportional to 294.89, 406.97 and 163.92 is: 226.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.89 : 406.97 = 163.92 : x
  2. Step 2: Convert to fraction form
    294.89/406.97 = 163.92/x
  3. Step 3: Cross multiply
    294.89x = 406.97 × 163.92
  4. Step 4: Simplify right side
    294.89x = 66,712.77
  5. Step 5: Solve for x
    x = 66,712.77/294.89
  6. Step 6: Final answer
    x = 226.23

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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.