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Finding the Fourth Proportional to 239.43, 357.18 and 201.16

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Solution

The fourth proportional to 239.43, 357.18 and 201.16 is: 300.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.43 : 357.18 = 201.16 : x
  2. Step 2: Convert to fraction form
    239.43/357.18 = 201.16/x
  3. Step 3: Cross multiply
    239.43x = 357.18 × 201.16
  4. Step 4: Simplify right side
    239.43x = 71,849.44
  5. Step 5: Solve for x
    x = 71,849.44/239.43
  6. Step 6: Final answer
    x = 300.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.