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Finding the Fourth Proportional to 833.11, 1,249.70 and 543.94

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Solution

The fourth proportional to 833.11, 1,249.70 and 543.94 is: 815.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.11 : 1,249.70 = 543.94 : x
  2. Step 2: Convert to fraction form
    833.11/1,249.70 = 543.94/x
  3. Step 3: Cross multiply
    833.11x = 1,249.70 × 543.94
  4. Step 4: Simplify right side
    833.11x = 679,755.97
  5. Step 5: Solve for x
    x = 679,755.97/833.11
  6. Step 6: Final answer
    x = 815.93

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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.