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Finding the Fourth Proportional to 756.14, 1,134.42 and 269.23

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Solution

The fourth proportional to 756.14, 1,134.42 and 269.23 is: 403.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.14 : 1,134.42 = 269.23 : x
  2. Step 2: Convert to fraction form
    756.14/1,134.42 = 269.23/x
  3. Step 3: Cross multiply
    756.14x = 1,134.42 × 269.23
  4. Step 4: Simplify right side
    756.14x = 305,414.22
  5. Step 5: Solve for x
    x = 305,414.22/756.14
  6. Step 6: Final answer
    x = 403.91

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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.