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Finding the Fourth Proportional to 579.34, 867.45 and 397.09

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Solution

The fourth proportional to 579.34, 867.45 and 397.09 is: 594.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.34 : 867.45 = 397.09 : x
  2. Step 2: Convert to fraction form
    579.34/867.45 = 397.09/x
  3. Step 3: Cross multiply
    579.34x = 867.45 × 397.09
  4. Step 4: Simplify right side
    579.34x = 344,451.38
  5. Step 5: Solve for x
    x = 344,451.38/579.34
  6. Step 6: Final answer
    x = 594.56

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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.