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Finding the Fourth Proportional to 844.37, 1,165.41 and 549.12

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Solution

The fourth proportional to 844.37, 1,165.41 and 549.12 is: 757.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.37 : 1,165.41 = 549.12 : x
  2. Step 2: Convert to fraction form
    844.37/1,165.41 = 549.12/x
  3. Step 3: Cross multiply
    844.37x = 1,165.41 × 549.12
  4. Step 4: Simplify right side
    844.37x = 639,949.94
  5. Step 5: Solve for x
    x = 639,949.94/844.37
  6. Step 6: Final answer
    x = 757.91

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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.