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Finding the Fourth Proportional to 490.14, 676.59 and 324.51

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Solution

The fourth proportional to 490.14, 676.59 and 324.51 is: 447.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.14 : 676.59 = 324.51 : x
  2. Step 2: Convert to fraction form
    490.14/676.59 = 324.51/x
  3. Step 3: Cross multiply
    490.14x = 676.59 × 324.51
  4. Step 4: Simplify right side
    490.14x = 219,560.22
  5. Step 5: Solve for x
    x = 219,560.22/490.14
  6. Step 6: Final answer
    x = 447.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.