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Finding the Fourth Proportional to 269.91, 403.10 and 267.08

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Solution

The fourth proportional to 269.91, 403.10 and 267.08 is: 398.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.91 : 403.10 = 267.08 : x
  2. Step 2: Convert to fraction form
    269.91/403.10 = 267.08/x
  3. Step 3: Cross multiply
    269.91x = 403.10 × 267.08
  4. Step 4: Simplify right side
    269.91x = 107,656.60
  5. Step 5: Solve for x
    x = 107,656.60/269.91
  6. Step 6: Final answer
    x = 398.86

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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.