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Finding the Fourth Proportional to 891.01, 1,230.17 and 797.59

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Solution

The fourth proportional to 891.01, 1,230.17 and 797.59 is: 1,101.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    891.01 : 1,230.17 = 797.59 : x
  2. Step 2: Convert to fraction form
    891.01/1,230.17 = 797.59/x
  3. Step 3: Cross multiply
    891.01x = 1,230.17 × 797.59
  4. Step 4: Simplify right side
    891.01x = 981,171.29
  5. Step 5: Solve for x
    x = 981,171.29/891.01
  6. Step 6: Final answer
    x = 1,101.19

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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.