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Finding the Fourth Proportional to 849.22, 1,171.89 and 495.11

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Solution

The fourth proportional to 849.22, 1,171.89 and 495.11 is: 683.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.22 : 1,171.89 = 495.11 : x
  2. Step 2: Convert to fraction form
    849.22/1,171.89 = 495.11/x
  3. Step 3: Cross multiply
    849.22x = 1,171.89 × 495.11
  4. Step 4: Simplify right side
    849.22x = 580,217.39
  5. Step 5: Solve for x
    x = 580,217.39/849.22
  6. Step 6: Final answer
    x = 683.24

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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.