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Finding the Fourth Proportional to 844.48, 1,266.30 and 493.21

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Solution

The fourth proportional to 844.48, 1,266.30 and 493.21 is: 739.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.48 : 1,266.30 = 493.21 : x
  2. Step 2: Convert to fraction form
    844.48/1,266.30 = 493.21/x
  3. Step 3: Cross multiply
    844.48x = 1,266.30 × 493.21
  4. Step 4: Simplify right side
    844.48x = 624,543.03
  5. Step 5: Solve for x
    x = 624,543.03/844.48
  6. Step 6: Final answer
    x = 739.56

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Double scale
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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.