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Finding the Fourth Proportional to 896.48, 1,236.48 and 675.44

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Solution

The fourth proportional to 896.48, 1,236.48 and 675.44 is: 931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.48 : 1,236.48 = 675.44 : x
  2. Step 2: Convert to fraction form
    896.48/1,236.48 = 675.44/x
  3. Step 3: Cross multiply
    896.48x = 1,236.48 × 675.44
  4. Step 4: Simplify right side
    896.48x = 835,168.05
  5. Step 5: Solve for x
    x = 835,168.05/896.48
  6. Step 6: Final answer
    x = 931.61

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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.