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Finding the Fourth Proportional to 896.09, 1,236.49 and 522.98

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Solution

The fourth proportional to 896.09, 1,236.49 and 522.98 is: 721.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.09 : 1,236.49 = 522.98 : x
  2. Step 2: Convert to fraction form
    896.09/1,236.49 = 522.98/x
  3. Step 3: Cross multiply
    896.09x = 1,236.49 × 522.98
  4. Step 4: Simplify right side
    896.09x = 646,659.54
  5. Step 5: Solve for x
    x = 646,659.54/896.09
  6. Step 6: Final answer
    x = 721.65

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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.