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Finding the Fourth Proportional to 845.74, 1,168.25 and 680.59

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Solution

The fourth proportional to 845.74, 1,168.25 and 680.59 is: 940.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.74 : 1,168.25 = 680.59 : x
  2. Step 2: Convert to fraction form
    845.74/1,168.25 = 680.59/x
  3. Step 3: Cross multiply
    845.74x = 1,168.25 × 680.59
  4. Step 4: Simplify right side
    845.74x = 795,090.02
  5. Step 5: Solve for x
    x = 795,090.02/845.74
  6. Step 6: Final answer
    x = 940.12

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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.