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Finding the Fourth Proportional to 325.40, 488.04 and 108.97

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Solution

The fourth proportional to 325.40, 488.04 and 108.97 is: 163.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.40 : 488.04 = 108.97 : x
  2. Step 2: Convert to fraction form
    325.40/488.04 = 108.97/x
  3. Step 3: Cross multiply
    325.40x = 488.04 × 108.97
  4. Step 4: Simplify right side
    325.40x = 53,181.72
  5. Step 5: Solve for x
    x = 53,181.72/325.40
  6. Step 6: Final answer
    x = 163.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.