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Finding the Fourth Proportional to 579.34, 869.16 and 168.51

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Solution

The fourth proportional to 579.34, 869.16 and 168.51 is: 252.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.34 : 869.16 = 168.51 : x
  2. Step 2: Convert to fraction form
    579.34/869.16 = 168.51/x
  3. Step 3: Cross multiply
    579.34x = 869.16 × 168.51
  4. Step 4: Simplify right side
    579.34x = 146,462.15
  5. Step 5: Solve for x
    x = 146,462.15/579.34
  6. Step 6: Final answer
    x = 252.81

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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.