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Finding the Fourth Proportional to 845.24, 1,167.56 and 680.09

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Solution

The fourth proportional to 845.24, 1,167.56 and 680.09 is: 939.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.24 : 1,167.56 = 680.09 : x
  2. Step 2: Convert to fraction form
    845.24/1,167.56 = 680.09/x
  3. Step 3: Cross multiply
    845.24x = 1,167.56 × 680.09
  4. Step 4: Simplify right side
    845.24x = 794,036.64
  5. Step 5: Solve for x
    x = 794,036.64/845.24
  6. Step 6: Final answer
    x = 939.43

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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.