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Finding the Fourth Proportional to 846.33, 1,167.36 and 680.93

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Solution

The fourth proportional to 846.33, 1,167.36 and 680.93 is: 939.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.33 : 1,167.36 = 680.93 : x
  2. Step 2: Convert to fraction form
    846.33/1,167.36 = 680.93/x
  3. Step 3: Cross multiply
    846.33x = 1,167.36 × 680.93
  4. Step 4: Simplify right side
    846.33x = 794,884.61
  5. Step 5: Solve for x
    x = 794,884.61/846.33
  6. Step 6: Final answer
    x = 939.21

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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.