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Finding the Fourth Proportional to 270.66, 404.21 and 267.83

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Solution

The fourth proportional to 270.66, 404.21 and 267.83 is: 399.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.66 : 404.21 = 267.83 : x
  2. Step 2: Convert to fraction form
    270.66/404.21 = 267.83/x
  3. Step 3: Cross multiply
    270.66x = 404.21 × 267.83
  4. Step 4: Simplify right side
    270.66x = 108,258.21
  5. Step 5: Solve for x
    x = 108,258.21/270.66
  6. Step 6: Final answer
    x = 399.98

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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.