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Finding the Fourth Proportional to 1,143.12, 1,714.82 and 363.17

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Solution

The fourth proportional to 1,143.12, 1,714.82 and 363.17 is: 544.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.12 : 1,714.82 = 363.17 : x
  2. Step 2: Convert to fraction form
    1,143.12/1,714.82 = 363.17/x
  3. Step 3: Cross multiply
    1,143.12x = 1,714.82 × 363.17
  4. Step 4: Simplify right side
    1,143.12x = 622,766.05
  5. Step 5: Solve for x
    x = 622,766.05/1,143.12
  6. Step 6: Final answer
    x = 544.79

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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.