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Finding the Fourth Proportional to 324.01, 486.02 and 80.54

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Solution

The fourth proportional to 324.01, 486.02 and 80.54 is: 120.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.01 : 486.02 = 80.54 : x
  2. Step 2: Convert to fraction form
    324.01/486.02 = 80.54/x
  3. Step 3: Cross multiply
    324.01x = 486.02 × 80.54
  4. Step 4: Simplify right side
    324.01x = 39,144.05
  5. Step 5: Solve for x
    x = 39,144.05/324.01
  6. Step 6: Final answer
    x = 120.81

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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.