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Finding the Fourth Proportional to 1,053.97, 1,454.77 and 611.79

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Solution

The fourth proportional to 1,053.97, 1,454.77 and 611.79 is: 844.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.97 : 1,454.77 = 611.79 : x
  2. Step 2: Convert to fraction form
    1,053.97/1,454.77 = 611.79/x
  3. Step 3: Cross multiply
    1,053.97x = 1,454.77 × 611.79
  4. Step 4: Simplify right side
    1,053.97x = 890,003.41
  5. Step 5: Solve for x
    x = 890,003.41/1,053.97
  6. Step 6: Final answer
    x = 844.43

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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.