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Finding the Fourth Proportional to 578.96, 868.35 and 168.01

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Solution

The fourth proportional to 578.96, 868.35 and 168.01 is: 251.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.96 : 868.35 = 168.01 : x
  2. Step 2: Convert to fraction form
    578.96/868.35 = 168.01/x
  3. Step 3: Cross multiply
    578.96x = 868.35 × 168.01
  4. Step 4: Simplify right side
    578.96x = 145,891.44
  5. Step 5: Solve for x
    x = 145,891.44/578.96
  6. Step 6: Final answer
    x = 251.99

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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.