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Finding the Fourth Proportional to 1,481.00, 2,042.59 and 920.41

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Solution

The fourth proportional to 1,481.00, 2,042.59 and 920.41 is: 1,269.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.00 : 2,042.59 = 920.41 : x
  2. Step 2: Convert to fraction form
    1,481.00/2,042.59 = 920.41/x
  3. Step 3: Cross multiply
    1,481.00x = 2,042.59 × 920.41
  4. Step 4: Simplify right side
    1,481.00x = 1,880,028.66
  5. Step 5: Solve for x
    x = 1,880,028.66/1,481.00
  6. Step 6: Final answer
    x = 1,269.43

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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.