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Finding the Fourth Proportional to 580.60, 871.44 and 320.86

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Solution

The fourth proportional to 580.60, 871.44 and 320.86 is: 481.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.60 : 871.44 = 320.86 : x
  2. Step 2: Convert to fraction form
    580.60/871.44 = 320.86/x
  3. Step 3: Cross multiply
    580.60x = 871.44 × 320.86
  4. Step 4: Simplify right side
    580.60x = 279,610.24
  5. Step 5: Solve for x
    x = 279,610.24/580.60
  6. Step 6: Final answer
    x = 481.59

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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.