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Finding the Fourth Proportional to 324.85, 487.11 and 108.37

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Solution

The fourth proportional to 324.85, 487.11 and 108.37 is: 162.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.85 : 487.11 = 108.37 : x
  2. Step 2: Convert to fraction form
    324.85/487.11 = 108.37/x
  3. Step 3: Cross multiply
    324.85x = 487.11 × 108.37
  4. Step 4: Simplify right side
    324.85x = 52,788.11
  5. Step 5: Solve for x
    x = 52,788.11/324.85
  6. Step 6: Final answer
    x = 162.50

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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.