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Finding the Fourth Proportional to 579.24, 869.02 and 168.40

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Solution

The fourth proportional to 579.24, 869.02 and 168.40 is: 252.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.24 : 869.02 = 168.40 : x
  2. Step 2: Convert to fraction form
    579.24/869.02 = 168.40/x
  3. Step 3: Cross multiply
    579.24x = 869.02 × 168.40
  4. Step 4: Simplify right side
    579.24x = 146,342.97
  5. Step 5: Solve for x
    x = 146,342.97/579.24
  6. Step 6: Final answer
    x = 252.65

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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.