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Finding the Fourth Proportional to 579.08, 867.24 and 318.68

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Solution

The fourth proportional to 579.08, 867.24 and 318.68 is: 477.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.08 : 867.24 = 318.68 : x
  2. Step 2: Convert to fraction form
    579.08/867.24 = 318.68/x
  3. Step 3: Cross multiply
    579.08x = 867.24 × 318.68
  4. Step 4: Simplify right side
    579.08x = 276,372.04
  5. Step 5: Solve for x
    x = 276,372.04/579.08
  6. Step 6: Final answer
    x = 477.26

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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.