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Finding the Fourth Proportional to 171.05, 234.50 and 168.21

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Solution

The fourth proportional to 171.05, 234.50 and 168.21 is: 230.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.05 : 234.50 = 168.21 : x
  2. Step 2: Convert to fraction form
    171.05/234.50 = 168.21/x
  3. Step 3: Cross multiply
    171.05x = 234.50 × 168.21
  4. Step 4: Simplify right side
    171.05x = 39,444.40
  5. Step 5: Solve for x
    x = 39,444.40/171.05
  6. Step 6: Final answer
    x = 230.61

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.