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Finding the Fourth Proportional to 171.26, 236.13 and 118.70

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Solution

The fourth proportional to 171.26, 236.13 and 118.70 is: 163.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.26 : 236.13 = 118.70 : x
  2. Step 2: Convert to fraction form
    171.26/236.13 = 118.70/x
  3. Step 3: Cross multiply
    171.26x = 236.13 × 118.70
  4. Step 4: Simplify right side
    171.26x = 28,028.63
  5. Step 5: Solve for x
    x = 28,028.63/171.26
  6. Step 6: Final answer
    x = 163.66

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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.