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Finding the Fourth Proportional to 579.62, 874.98 and 576.38

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Solution

The fourth proportional to 579.62, 874.98 and 576.38 is: 870.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.62 : 874.98 = 576.38 : x
  2. Step 2: Convert to fraction form
    579.62/874.98 = 576.38/x
  3. Step 3: Cross multiply
    579.62x = 874.98 × 576.38
  4. Step 4: Simplify right side
    579.62x = 504,320.97
  5. Step 5: Solve for x
    x = 504,320.97/579.62
  6. Step 6: Final answer
    x = 870.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.