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Finding the Fourth Proportional to 315.29, 472.25 and 168.62

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Solution

The fourth proportional to 315.29, 472.25 and 168.62 is: 252.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.29 : 472.25 = 168.62 : x
  2. Step 2: Convert to fraction form
    315.29/472.25 = 168.62/x
  3. Step 3: Cross multiply
    315.29x = 472.25 × 168.62
  4. Step 4: Simplify right side
    315.29x = 79,627.59
  5. Step 5: Solve for x
    x = 79,627.59/315.29
  6. Step 6: Final answer
    x = 252.56

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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.