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Finding the Fourth Proportional to 104.19, 155.93 and 67.67

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Solution

The fourth proportional to 104.19, 155.93 and 67.67 is: 101.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.19 : 155.93 = 67.67 : x
  2. Step 2: Convert to fraction form
    104.19/155.93 = 67.67/x
  3. Step 3: Cross multiply
    104.19x = 155.93 × 67.67
  4. Step 4: Simplify right side
    104.19x = 10,550.67
  5. Step 5: Solve for x
    x = 10,550.67/104.19
  6. Step 6: Final answer
    x = 101.26

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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.