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Finding the Fourth Proportional to 170.16, 236.11 and 163.31

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Solution

The fourth proportional to 170.16, 236.11 and 163.31 is: 226.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.16 : 236.11 = 163.31 : x
  2. Step 2: Convert to fraction form
    170.16/236.11 = 163.31/x
  3. Step 3: Cross multiply
    170.16x = 236.11 × 163.31
  4. Step 4: Simplify right side
    170.16x = 38,557.54
  5. Step 5: Solve for x
    x = 38,557.54/170.16
  6. Step 6: Final answer
    x = 226.60

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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.