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Finding the Fourth Proportional to 224.02, 309.25 and 168.78

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Solution

The fourth proportional to 224.02, 309.25 and 168.78 is: 232.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.02 : 309.25 = 168.78 : x
  2. Step 2: Convert to fraction form
    224.02/309.25 = 168.78/x
  3. Step 3: Cross multiply
    224.02x = 309.25 × 168.78
  4. Step 4: Simplify right side
    224.02x = 52,194.27
  5. Step 5: Solve for x
    x = 52,194.27/224.02
  6. Step 6: Final answer
    x = 232.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.