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Finding the Fourth Proportional to 104.67, 157.34 and 74.44

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Solution

The fourth proportional to 104.67, 157.34 and 74.44 is: 111.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.67 : 157.34 = 74.44 : x
  2. Step 2: Convert to fraction form
    104.67/157.34 = 74.44/x
  3. Step 3: Cross multiply
    104.67x = 157.34 × 74.44
  4. Step 4: Simplify right side
    104.67x = 11,713.21
  5. Step 5: Solve for x
    x = 11,713.21/104.67
  6. Step 6: Final answer
    x = 111.91

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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.