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Finding the Fourth Proportional to 1,235.94, 1,694.78 and 1,194.54

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Solution

The fourth proportional to 1,235.94, 1,694.78 and 1,194.54 is: 1,638.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.94 : 1,694.78 = 1,194.54 : x
  2. Step 2: Convert to fraction form
    1,235.94/1,694.78 = 1,194.54/x
  3. Step 3: Cross multiply
    1,235.94x = 1,694.78 × 1,194.54
  4. Step 4: Simplify right side
    1,235.94x = 2,024,476.53
  5. Step 5: Solve for x
    x = 2,024,476.53/1,235.94
  6. Step 6: Final answer
    x = 1,638.01

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.