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Finding the Fourth Proportional to 896.79, 1,236.35 and 673.06

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Solution

The fourth proportional to 896.79, 1,236.35 and 673.06 is: 927.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.79 : 1,236.35 = 673.06 : x
  2. Step 2: Convert to fraction form
    896.79/1,236.35 = 673.06/x
  3. Step 3: Cross multiply
    896.79x = 1,236.35 × 673.06
  4. Step 4: Simplify right side
    896.79x = 832,137.73
  5. Step 5: Solve for x
    x = 832,137.73/896.79
  6. Step 6: Final answer
    x = 927.91

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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.