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Finding the Fourth Proportional to 194.75, 268.79 and 124.83

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Solution

The fourth proportional to 194.75, 268.79 and 124.83 is: 172.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.75 : 268.79 = 124.83 : x
  2. Step 2: Convert to fraction form
    194.75/268.79 = 124.83/x
  3. Step 3: Cross multiply
    194.75x = 268.79 × 124.83
  4. Step 4: Simplify right side
    194.75x = 33,553.06
  5. Step 5: Solve for x
    x = 33,553.06/194.75
  6. Step 6: Final answer
    x = 172.29

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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.