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Finding the Fourth Proportional to 513.97, 709.39 and 327.41

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Solution

The fourth proportional to 513.97, 709.39 and 327.41 is: 451.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.97 : 709.39 = 327.41 : x
  2. Step 2: Convert to fraction form
    513.97/709.39 = 327.41/x
  3. Step 3: Cross multiply
    513.97x = 709.39 × 327.41
  4. Step 4: Simplify right side
    513.97x = 232,263.05
  5. Step 5: Solve for x
    x = 232,263.05/513.97
  6. Step 6: Final answer
    x = 451.90

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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.