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Finding the Fourth Proportional to 294.72, 406.74 and 163.74

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Solution

The fourth proportional to 294.72, 406.74 and 163.74 is: 225.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.72 : 406.74 = 163.74 : x
  2. Step 2: Convert to fraction form
    294.72/406.74 = 163.74/x
  3. Step 3: Cross multiply
    294.72x = 406.74 × 163.74
  4. Step 4: Simplify right side
    294.72x = 66,599.61
  5. Step 5: Solve for x
    x = 66,599.61/294.72
  6. Step 6: Final answer
    x = 225.98

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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.