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Finding the Fourth Proportional to 1,204.26, 1,661.07 and 854.34

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Solution

The fourth proportional to 1,204.26, 1,661.07 and 854.34 is: 1,178.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204.26 : 1,661.07 = 854.34 : x
  2. Step 2: Convert to fraction form
    1,204.26/1,661.07 = 854.34/x
  3. Step 3: Cross multiply
    1,204.26x = 1,661.07 × 854.34
  4. Step 4: Simplify right side
    1,204.26x = 1,419,118.54
  5. Step 5: Solve for x
    x = 1,419,118.54/1,204.26
  6. Step 6: Final answer
    x = 1,178.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.