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Finding the Fourth Proportional to 892.56, 1,231.87 and 682.33

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Solution

The fourth proportional to 892.56, 1,231.87 and 682.33 is: 941.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.56 : 1,231.87 = 682.33 : x
  2. Step 2: Convert to fraction form
    892.56/1,231.87 = 682.33/x
  3. Step 3: Cross multiply
    892.56x = 1,231.87 × 682.33
  4. Step 4: Simplify right side
    892.56x = 840,539.63
  5. Step 5: Solve for x
    x = 840,539.63/892.56
  6. Step 6: Final answer
    x = 941.72

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1.5x scale

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.