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Finding the Fourth Proportional to 194.42, 268.44 and 142.06

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Solution

The fourth proportional to 194.42, 268.44 and 142.06 is: 196.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.42 : 268.44 = 142.06 : x
  2. Step 2: Convert to fraction form
    194.42/268.44 = 142.06/x
  3. Step 3: Cross multiply
    194.42x = 268.44 × 142.06
  4. Step 4: Simplify right side
    194.42x = 38,134.59
  5. Step 5: Solve for x
    x = 38,134.59/194.42
  6. Step 6: Final answer
    x = 196.15

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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.