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Finding the Fourth Proportional to 270.68, 404.21 and 267.84

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Solution

The fourth proportional to 270.68, 404.21 and 267.84 is: 399.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.68 : 404.21 = 267.84 : x
  2. Step 2: Convert to fraction form
    270.68/404.21 = 267.84/x
  3. Step 3: Cross multiply
    270.68x = 404.21 × 267.84
  4. Step 4: Simplify right side
    270.68x = 108,264.28
  5. Step 5: Solve for x
    x = 108,264.28/270.68
  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.