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Finding the Fourth Proportional to 1,232.44, 1,700.22 and 812.26

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Solution

The fourth proportional to 1,232.44, 1,700.22 and 812.26 is: 1,120.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,232.44 : 1,700.22 = 812.26 : x
  2. Step 2: Convert to fraction form
    1,232.44/1,700.22 = 812.26/x
  3. Step 3: Cross multiply
    1,232.44x = 1,700.22 × 812.26
  4. Step 4: Simplify right side
    1,232.44x = 1,381,020.70
  5. Step 5: Solve for x
    x = 1,381,020.70/1,232.44
  6. Step 6: Final answer
    x = 1,120.56

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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.