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Finding the Fourth Proportional to 1,340.49, 2,011.41 and 756.14

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Solution

The fourth proportional to 1,340.49, 2,011.41 and 756.14 is: 1,134.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.49 : 2,011.41 = 756.14 : x
  2. Step 2: Convert to fraction form
    1,340.49/2,011.41 = 756.14/x
  3. Step 3: Cross multiply
    1,340.49x = 2,011.41 × 756.14
  4. Step 4: Simplify right side
    1,340.49x = 1,520,912.59
  5. Step 5: Solve for x
    x = 1,520,912.59/1,340.49
  6. Step 6: Final answer
    x = 1,134.59

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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.