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Finding the Fourth Proportional to 896.94, 1,236.87 and 676.62

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Solution

The fourth proportional to 896.94, 1,236.87 and 676.62 is: 933.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.94 : 1,236.87 = 676.62 : x
  2. Step 2: Convert to fraction form
    896.94/1,236.87 = 676.62/x
  3. Step 3: Cross multiply
    896.94x = 1,236.87 × 676.62
  4. Step 4: Simplify right side
    896.94x = 836,890.98
  5. Step 5: Solve for x
    x = 836,890.98/896.94
  6. Step 6: Final answer
    x = 933.05

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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.