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Finding the Fourth Proportional to 1,053.39, 1,453.82 and 611.43

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Solution

The fourth proportional to 1,053.39, 1,453.82 and 611.43 is: 843.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.39 : 1,453.82 = 611.43 : x
  2. Step 2: Convert to fraction form
    1,053.39/1,453.82 = 611.43/x
  3. Step 3: Cross multiply
    1,053.39x = 1,453.82 × 611.43
  4. Step 4: Simplify right side
    1,053.39x = 888,906.11
  5. Step 5: Solve for x
    x = 888,906.11/1,053.39
  6. Step 6: Final answer
    x = 843.85

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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.