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Finding the Fourth Proportional to 1,053.97, 1,454.19 and 611.60

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Solution

The fourth proportional to 1,053.97, 1,454.19 and 611.60 is: 843.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.97 : 1,454.19 = 611.60 : x
  2. Step 2: Convert to fraction form
    1,053.97/1,454.19 = 611.60/x
  3. Step 3: Cross multiply
    1,053.97x = 1,454.19 × 611.60
  4. Step 4: Simplify right side
    1,053.97x = 889,382.60
  5. Step 5: Solve for x
    x = 889,382.60/1,053.97
  6. Step 6: Final answer
    x = 843.84

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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.