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Finding the Fourth Proportional to 168.87, 253.41 and 158.21

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Solution

The fourth proportional to 168.87, 253.41 and 158.21 is: 237.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.87 : 253.41 = 158.21 : x
  2. Step 2: Convert to fraction form
    168.87/253.41 = 158.21/x
  3. Step 3: Cross multiply
    168.87x = 253.41 × 158.21
  4. Step 4: Simplify right side
    168.87x = 40,092.00
  5. Step 5: Solve for x
    x = 40,092.00/168.87
  6. Step 6: Final answer
    x = 237.41

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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.