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Finding the Fourth Proportional to 267.06, 399.21 and 197.94

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Solution

The fourth proportional to 267.06, 399.21 and 197.94 is: 295.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.06 : 399.21 = 197.94 : x
  2. Step 2: Convert to fraction form
    267.06/399.21 = 197.94/x
  3. Step 3: Cross multiply
    267.06x = 399.21 × 197.94
  4. Step 4: Simplify right side
    267.06x = 79,019.63
  5. Step 5: Solve for x
    x = 79,019.63/267.06
  6. Step 6: Final answer
    x = 295.89

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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.