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Finding the Fourth Proportional to 168.37, 233.31 and 158.09

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Solution

The fourth proportional to 168.37, 233.31 and 158.09 is: 219.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.37 : 233.31 = 158.09 : x
  2. Step 2: Convert to fraction form
    168.37/233.31 = 158.09/x
  3. Step 3: Cross multiply
    168.37x = 233.31 × 158.09
  4. Step 4: Simplify right side
    168.37x = 36,884.56
  5. Step 5: Solve for x
    x = 36,884.56/168.37
  6. Step 6: Final answer
    x = 219.07

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.