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Finding the Fourth Proportional to 325.86, 487.98 and 163.62

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Solution

The fourth proportional to 325.86, 487.98 and 163.62 is: 245.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.86 : 487.98 = 163.62 : x
  2. Step 2: Convert to fraction form
    325.86/487.98 = 163.62/x
  3. Step 3: Cross multiply
    325.86x = 487.98 × 163.62
  4. Step 4: Simplify right side
    325.86x = 79,843.29
  5. Step 5: Solve for x
    x = 79,843.29/325.86
  6. Step 6: Final answer
    x = 245.02

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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.