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Finding the Fourth Proportional to 844.28, 1,266.34 and 535.20

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Solution

The fourth proportional to 844.28, 1,266.34 and 535.20 is: 802.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.28 : 1,266.34 = 535.20 : x
  2. Step 2: Convert to fraction form
    844.28/1,266.34 = 535.20/x
  3. Step 3: Cross multiply
    844.28x = 1,266.34 × 535.20
  4. Step 4: Simplify right side
    844.28x = 677,745.17
  5. Step 5: Solve for x
    x = 677,745.17/844.28
  6. Step 6: Final answer
    x = 802.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.