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Finding the Fourth Proportional to 650.13, 974.48 and 324.78

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Solution

The fourth proportional to 650.13, 974.48 and 324.78 is: 486.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.13 : 974.48 = 324.78 : x
  2. Step 2: Convert to fraction form
    650.13/974.48 = 324.78/x
  3. Step 3: Cross multiply
    650.13x = 974.48 × 324.78
  4. Step 4: Simplify right side
    650.13x = 316,489.99
  5. Step 5: Solve for x
    x = 316,489.99/650.13
  6. Step 6: Final answer
    x = 486.81

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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.