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Finding the Fourth Proportional to 207.52, 286.42 and 142.18

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Solution

The fourth proportional to 207.52, 286.42 and 142.18 is: 196.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.52 : 286.42 = 142.18 : x
  2. Step 2: Convert to fraction form
    207.52/286.42 = 142.18/x
  3. Step 3: Cross multiply
    207.52x = 286.42 × 142.18
  4. Step 4: Simplify right side
    207.52x = 40,723.20
  5. Step 5: Solve for x
    x = 40,723.20/207.52
  6. Step 6: Final answer
    x = 196.24

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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.