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Finding the Fourth Proportional to 114.82, 171.40 and 113.66

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Solution

The fourth proportional to 114.82, 171.40 and 113.66 is: 169.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.82 : 171.40 = 113.66 : x
  2. Step 2: Convert to fraction form
    114.82/171.40 = 113.66/x
  3. Step 3: Cross multiply
    114.82x = 171.40 × 113.66
  4. Step 4: Simplify right side
    114.82x = 19,481.32
  5. Step 5: Solve for x
    x = 19,481.32/114.82
  6. Step 6: Final answer
    x = 169.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.