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Finding the Fourth Proportional to 844.53, 1,266.82 and 612.32

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Solution

The fourth proportional to 844.53, 1,266.82 and 612.32 is: 918.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.53 : 1,266.82 = 612.32 : x
  2. Step 2: Convert to fraction form
    844.53/1,266.82 = 612.32/x
  3. Step 3: Cross multiply
    844.53x = 1,266.82 × 612.32
  4. Step 4: Simplify right side
    844.53x = 775,694.80
  5. Step 5: Solve for x
    x = 775,694.80/844.53
  6. Step 6: Final answer
    x = 918.49

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Double scale
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1.5x scale

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.