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Finding the Fourth Proportional to 324.96, 487.30 and 108.48

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Solution

The fourth proportional to 324.96, 487.30 and 108.48 is: 162.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.96 : 487.30 = 108.48 : x
  2. Step 2: Convert to fraction form
    324.96/487.30 = 108.48/x
  3. Step 3: Cross multiply
    324.96x = 487.30 × 108.48
  4. Step 4: Simplify right side
    324.96x = 52,862.30
  5. Step 5: Solve for x
    x = 52,862.30/324.96
  6. Step 6: Final answer
    x = 162.67

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