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Finding the Fourth Proportional to 314.85, 472.38 and 168.54

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Solution

The fourth proportional to 314.85, 472.38 and 168.54 is: 252.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.85 : 472.38 = 168.54 : x
  2. Step 2: Convert to fraction form
    314.85/472.38 = 168.54/x
  3. Step 3: Cross multiply
    314.85x = 472.38 × 168.54
  4. Step 4: Simplify right side
    314.85x = 79,614.93
  5. Step 5: Solve for x
    x = 79,614.93/314.85
  6. Step 6: Final answer
    x = 252.87

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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.