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Finding the Fourth Proportional to 146.82, 202.68 and 108

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Solution

The fourth proportional to 146.82, 202.68 and 108 is: 149.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.82 : 202.68 = 108 : x
  2. Step 2: Convert to fraction form
    146.82/202.68 = 108/x
  3. Step 3: Cross multiply
    146.82x = 202.68 × 108
  4. Step 4: Simplify right side
    146.82x = 21,889.44
  5. Step 5: Solve for x
    x = 21,889.44/146.82
  6. Step 6: Final answer
    x = 149.09

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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.