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Finding the Fourth Proportional to 1,274.54, 1,767.01 and 1,229.43

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Solution

The fourth proportional to 1,274.54, 1,767.01 and 1,229.43 is: 1,704.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274.54 : 1,767.01 = 1,229.43 : x
  2. Step 2: Convert to fraction form
    1,274.54/1,767.01 = 1,229.43/x
  3. Step 3: Cross multiply
    1,274.54x = 1,767.01 × 1,229.43
  4. Step 4: Simplify right side
    1,274.54x = 2,172,415.10
  5. Step 5: Solve for x
    x = 2,172,415.10/1,274.54
  6. Step 6: Final answer
    x = 1,704.47

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.