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Finding the Fourth Proportional to 896.35, 1,236.92 and 498.04

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Solution

The fourth proportional to 896.35, 1,236.92 and 498.04 is: 687.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.35 : 1,236.92 = 498.04 : x
  2. Step 2: Convert to fraction form
    896.35/1,236.92 = 498.04/x
  3. Step 3: Cross multiply
    896.35x = 1,236.92 × 498.04
  4. Step 4: Simplify right side
    896.35x = 616,039.05
  5. Step 5: Solve for x
    x = 616,039.05/896.35
  6. Step 6: Final answer
    x = 687.27

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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.