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Finding the Fourth Proportional to 844.60, 1,265.70 and 331

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Solution

The fourth proportional to 844.60, 1,265.70 and 331 is: 496.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.60 : 1,265.70 = 331 : x
  2. Step 2: Convert to fraction form
    844.60/1,265.70 = 331/x
  3. Step 3: Cross multiply
    844.60x = 1,265.70 × 331
  4. Step 4: Simplify right side
    844.60x = 418,946.70
  5. Step 5: Solve for x
    x = 418,946.70/844.60
  6. Step 6: Final answer
    x = 496.03

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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.