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Finding the Fourth Proportional to 896.00, 1,236.21 and 517.85

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Solution

The fourth proportional to 896.00, 1,236.21 and 517.85 is: 714.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.00 : 1,236.21 = 517.85 : x
  2. Step 2: Convert to fraction form
    896.00/1,236.21 = 517.85/x
  3. Step 3: Cross multiply
    896.00x = 1,236.21 × 517.85
  4. Step 4: Simplify right side
    896.00x = 640,167.86
  5. Step 5: Solve for x
    x = 640,167.86/896.00
  6. Step 6: Final answer
    x = 714.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.