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Finding the Fourth Proportional to 171.26, 236.40 and 113.06

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Solution

The fourth proportional to 171.26, 236.40 and 113.06 is: 156.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.26 : 236.40 = 113.06 : x
  2. Step 2: Convert to fraction form
    171.26/236.40 = 113.06/x
  3. Step 3: Cross multiply
    171.26x = 236.40 × 113.06
  4. Step 4: Simplify right side
    171.26x = 26,727.38
  5. Step 5: Solve for x
    x = 26,727.38/171.26
  6. Step 6: Final answer
    x = 156.06

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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.