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Finding the Fourth Proportional to 849.03, 1,171.44 and 613.05

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Solution

The fourth proportional to 849.03, 1,171.44 and 613.05 is: 845.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.03 : 1,171.44 = 613.05 : x
  2. Step 2: Convert to fraction form
    849.03/1,171.44 = 613.05/x
  3. Step 3: Cross multiply
    849.03x = 1,171.44 × 613.05
  4. Step 4: Simplify right side
    849.03x = 718,151.29
  5. Step 5: Solve for x
    x = 718,151.29/849.03
  6. Step 6: Final answer
    x = 845.85

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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.