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Finding the Fourth Proportional to 194.24, 268.44 and 155.36

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Solution

The fourth proportional to 194.24, 268.44 and 155.36 is: 214.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.24 : 268.44 = 155.36 : x
  2. Step 2: Convert to fraction form
    194.24/268.44 = 155.36/x
  3. Step 3: Cross multiply
    194.24x = 268.44 × 155.36
  4. Step 4: Simplify right side
    194.24x = 41,704.84
  5. Step 5: Solve for x
    x = 41,704.84/194.24
  6. Step 6: Final answer
    x = 214.71

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.