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Finding the Fourth Proportional to 267.25, 400.47 and 190.38

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Solution

The fourth proportional to 267.25, 400.47 and 190.38 is: 285.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.25 : 400.47 = 190.38 : x
  2. Step 2: Convert to fraction form
    267.25/400.47 = 190.38/x
  3. Step 3: Cross multiply
    267.25x = 400.47 × 190.38
  4. Step 4: Simplify right side
    267.25x = 76,239.42
  5. Step 5: Solve for x
    x = 76,239.42/267.25
  6. Step 6: Final answer
    x = 285.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.