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Finding the Fourth Proportional to 837.43, 1,253.93 and 672.12

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Solution

The fourth proportional to 837.43, 1,253.93 and 672.12 is: 1,006.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.43 : 1,253.93 = 672.12 : x
  2. Step 2: Convert to fraction form
    837.43/1,253.93 = 672.12/x
  3. Step 3: Cross multiply
    837.43x = 1,253.93 × 672.12
  4. Step 4: Simplify right side
    837.43x = 842,791.43
  5. Step 5: Solve for x
    x = 842,791.43/837.43
  6. Step 6: Final answer
    x = 1,006.40

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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.