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Finding the Fourth Proportional to 1,274.45, 1,910.96 and 754.52

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Solution

The fourth proportional to 1,274.45, 1,910.96 and 754.52 is: 1,131.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274.45 : 1,910.96 = 754.52 : x
  2. Step 2: Convert to fraction form
    1,274.45/1,910.96 = 754.52/x
  3. Step 3: Cross multiply
    1,274.45x = 1,910.96 × 754.52
  4. Step 4: Simplify right side
    1,274.45x = 1,441,858.54
  5. Step 5: Solve for x
    x = 1,441,858.54/1,274.45
  6. Step 6: Final answer
    x = 1,131.36

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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.