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Finding the Fourth Proportional to 844.14, 1,165.50 and 634.80

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Solution

The fourth proportional to 844.14, 1,165.50 and 634.80 is: 876.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.14 : 1,165.50 = 634.80 : x
  2. Step 2: Convert to fraction form
    844.14/1,165.50 = 634.80/x
  3. Step 3: Cross multiply
    844.14x = 1,165.50 × 634.80
  4. Step 4: Simplify right side
    844.14x = 739,859.40
  5. Step 5: Solve for x
    x = 739,859.40/844.14
  6. Step 6: Final answer
    x = 876.47

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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.