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Finding the Fourth Proportional to 579.97, 870.08 and 250.91

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Solution

The fourth proportional to 579.97, 870.08 and 250.91 is: 376.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.97 : 870.08 = 250.91 : x
  2. Step 2: Convert to fraction form
    579.97/870.08 = 250.91/x
  3. Step 3: Cross multiply
    579.97x = 870.08 × 250.91
  4. Step 4: Simplify right side
    579.97x = 218,311.77
  5. Step 5: Solve for x
    x = 218,311.77/579.97
  6. Step 6: Final answer
    x = 376.42

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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.