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Finding the Fourth Proportional to 352.43, 528.65 and 108.96

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Solution

The fourth proportional to 352.43, 528.65 and 108.96 is: 163.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.43 : 528.65 = 108.96 : x
  2. Step 2: Convert to fraction form
    352.43/528.65 = 108.96/x
  3. Step 3: Cross multiply
    352.43x = 528.65 × 108.96
  4. Step 4: Simplify right side
    352.43x = 57,601.98
  5. Step 5: Solve for x
    x = 57,601.98/352.43
  6. Step 6: Final answer
    x = 163.44

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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.