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Finding the Fourth Proportional to 587.20, 879.68 and 329.92

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Solution

The fourth proportional to 587.20, 879.68 and 329.92 is: 494.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.20 : 879.68 = 329.92 : x
  2. Step 2: Convert to fraction form
    587.20/879.68 = 329.92/x
  3. Step 3: Cross multiply
    587.20x = 879.68 × 329.92
  4. Step 4: Simplify right side
    587.20x = 290,224.03
  5. Step 5: Solve for x
    x = 290,224.03/587.20
  6. Step 6: Final answer
    x = 494.25

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.