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Finding the Fourth Proportional to 853.01, 1,179.28 and 845.23

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Solution

The fourth proportional to 853.01, 1,179.28 and 845.23 is: 1,168.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    853.01 : 1,179.28 = 845.23 : x
  2. Step 2: Convert to fraction form
    853.01/1,179.28 = 845.23/x
  3. Step 3: Cross multiply
    853.01x = 1,179.28 × 845.23
  4. Step 4: Simplify right side
    853.01x = 996,757.77
  5. Step 5: Solve for x
    x = 996,757.77/853.01
  6. Step 6: Final answer
    x = 1,168.51

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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.