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Finding the Fourth Proportional to 1,081.44, 1,493.28 and 801.36

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Solution

The fourth proportional to 1,081.44, 1,493.28 and 801.36 is: 1,106.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.44 : 1,493.28 = 801.36 : x
  2. Step 2: Convert to fraction form
    1,081.44/1,493.28 = 801.36/x
  3. Step 3: Cross multiply
    1,081.44x = 1,493.28 × 801.36
  4. Step 4: Simplify right side
    1,081.44x = 1,196,654.86
  5. Step 5: Solve for x
    x = 1,196,654.86/1,081.44
  6. Step 6: Final answer
    x = 1,106.54

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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.