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Finding the Fourth Proportional to 194.52, 268.44 and 161.70

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Solution

The fourth proportional to 194.52, 268.44 and 161.70 is: 223.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.52 : 268.44 = 161.70 : x
  2. Step 2: Convert to fraction form
    194.52/268.44 = 161.70/x
  3. Step 3: Cross multiply
    194.52x = 268.44 × 161.70
  4. Step 4: Simplify right side
    194.52x = 43,406.75
  5. Step 5: Solve for x
    x = 43,406.75/194.52
  6. Step 6: Final answer
    x = 223.15

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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.