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Finding the Fourth Proportional to 883.86, 1,326.09 and 267.55

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Solution

The fourth proportional to 883.86, 1,326.09 and 267.55 is: 401.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.86 : 1,326.09 = 267.55 : x
  2. Step 2: Convert to fraction form
    883.86/1,326.09 = 267.55/x
  3. Step 3: Cross multiply
    883.86x = 1,326.09 × 267.55
  4. Step 4: Simplify right side
    883.86x = 354,795.38
  5. Step 5: Solve for x
    x = 354,795.38/883.86
  6. Step 6: Final answer
    x = 401.42

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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.