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Finding the Fourth Proportional to 113.96, 170.78 and 110.44

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Solution

The fourth proportional to 113.96, 170.78 and 110.44 is: 165.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.96 : 170.78 = 110.44 : x
  2. Step 2: Convert to fraction form
    113.96/170.78 = 110.44/x
  3. Step 3: Cross multiply
    113.96x = 170.78 × 110.44
  4. Step 4: Simplify right side
    113.96x = 18,860.94
  5. Step 5: Solve for x
    x = 18,860.94/113.96
  6. Step 6: Final answer
    x = 165.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.