Home / 728.03-1,091.94-265.75

Finding the Fourth Proportional to 728.03, 1,091.94 and 265.75

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Solution

The fourth proportional to 728.03, 1,091.94 and 265.75 is: 398.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    728.03 : 1,091.94 = 265.75 : x
  2. Step 2: Convert to fraction form
    728.03/1,091.94 = 265.75/x
  3. Step 3: Cross multiply
    728.03x = 1,091.94 × 265.75
  4. Step 4: Simplify right side
    728.03x = 290,181.73
  5. Step 5: Solve for x
    x = 290,181.73/728.03
  6. Step 6: Final answer
    x = 398.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.