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Finding the Fourth Proportional to 352.11, 529.38 and 325.38

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Solution

The fourth proportional to 352.11, 529.38 and 325.38 is: 489.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.11 : 529.38 = 325.38 : x
  2. Step 2: Convert to fraction form
    352.11/529.38 = 325.38/x
  3. Step 3: Cross multiply
    352.11x = 529.38 × 325.38
  4. Step 4: Simplify right side
    352.11x = 172,249.66
  5. Step 5: Solve for x
    x = 172,249.66/352.11
  6. Step 6: Final answer
    x = 489.19

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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.