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Finding the Fourth Proportional to 2,279.66, 3,419.10 and 636.37

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Solution

The fourth proportional to 2,279.66, 3,419.10 and 636.37 is: 954.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.66 : 3,419.10 = 636.37 : x
  2. Step 2: Convert to fraction form
    2,279.66/3,419.10 = 636.37/x
  3. Step 3: Cross multiply
    2,279.66x = 3,419.10 × 636.37
  4. Step 4: Simplify right side
    2,279.66x = 2,175,795.57
  5. Step 5: Solve for x
    x = 2,175,795.57/2,279.66
  6. Step 6: Final answer
    x = 954.44

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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.