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Finding the Fourth Proportional to 849.92, 1,173.44 and 674.56

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Solution

The fourth proportional to 849.92, 1,173.44 and 674.56 is: 931.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.92 : 1,173.44 = 674.56 : x
  2. Step 2: Convert to fraction form
    849.92/1,173.44 = 674.56/x
  3. Step 3: Cross multiply
    849.92x = 1,173.44 × 674.56
  4. Step 4: Simplify right side
    849.92x = 791,555.69
  5. Step 5: Solve for x
    x = 791,555.69/849.92
  6. Step 6: Final answer
    x = 931.33

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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.