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Finding the Fourth Proportional to 194.37, 268.18 and 111.49

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Solution

The fourth proportional to 194.37, 268.18 and 111.49 is: 153.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.37 : 268.18 = 111.49 : x
  2. Step 2: Convert to fraction form
    194.37/268.18 = 111.49/x
  3. Step 3: Cross multiply
    194.37x = 268.18 × 111.49
  4. Step 4: Simplify right side
    194.37x = 29,899.95
  5. Step 5: Solve for x
    x = 29,899.95/194.37
  6. Step 6: Final answer
    x = 153.83

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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.