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Finding the Fourth Proportional to 756.28, 1,134 and 269.26

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Solution

The fourth proportional to 756.28, 1,134 and 269.26 is: 403.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.28 : 1,134 = 269.26 : x
  2. Step 2: Convert to fraction form
    756.28/1,134 = 269.26/x
  3. Step 3: Cross multiply
    756.28x = 1,134 × 269.26
  4. Step 4: Simplify right side
    756.28x = 305,340.84
  5. Step 5: Solve for x
    x = 305,340.84/756.28
  6. Step 6: Final answer
    x = 403.74

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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.