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Finding the Fourth Proportional to 844.48, 1,263.48 and 479.44

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Solution

The fourth proportional to 844.48, 1,263.48 and 479.44 is: 717.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.48 : 1,263.48 = 479.44 : x
  2. Step 2: Convert to fraction form
    844.48/1,263.48 = 479.44/x
  3. Step 3: Cross multiply
    844.48x = 1,263.48 × 479.44
  4. Step 4: Simplify right side
    844.48x = 605,762.85
  5. Step 5: Solve for x
    x = 605,762.85/844.48
  6. Step 6: Final answer
    x = 717.32

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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.