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Finding the Fourth Proportional to 580.67, 871.29 and 255.65

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Solution

The fourth proportional to 580.67, 871.29 and 255.65 is: 383.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.67 : 871.29 = 255.65 : x
  2. Step 2: Convert to fraction form
    580.67/871.29 = 255.65/x
  3. Step 3: Cross multiply
    580.67x = 871.29 × 255.65
  4. Step 4: Simplify right side
    580.67x = 222,745.29
  5. Step 5: Solve for x
    x = 222,745.29/580.67
  6. Step 6: Final answer
    x = 383.60

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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.