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Finding the Fourth Proportional to 844.42, 1,165.09 and 635.10

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Solution

The fourth proportional to 844.42, 1,165.09 and 635.10 is: 876.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.42 : 1,165.09 = 635.10 : x
  2. Step 2: Convert to fraction form
    844.42/1,165.09 = 635.10/x
  3. Step 3: Cross multiply
    844.42x = 1,165.09 × 635.10
  4. Step 4: Simplify right side
    844.42x = 739,948.66
  5. Step 5: Solve for x
    x = 739,948.66/844.42
  6. Step 6: Final answer
    x = 876.28

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Double scale
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1.5x scale

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.