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Finding the Fourth Proportional to 837.88, 1,248.83 and 818.44

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Solution

The fourth proportional to 837.88, 1,248.83 and 818.44 is: 1,219.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.88 : 1,248.83 = 818.44 : x
  2. Step 2: Convert to fraction form
    837.88/1,248.83 = 818.44/x
  3. Step 3: Cross multiply
    837.88x = 1,248.83 × 818.44
  4. Step 4: Simplify right side
    837.88x = 1,022,092.43
  5. Step 5: Solve for x
    x = 1,022,092.43/837.88
  6. Step 6: Final answer
    x = 1,219.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.