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Finding the Fourth Proportional to 827.20, 1,232.69 and 754.30

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Solution

The fourth proportional to 827.20, 1,232.69 and 754.30 is: 1,124.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    827.20 : 1,232.69 = 754.30 : x
  2. Step 2: Convert to fraction form
    827.20/1,232.69 = 754.30/x
  3. Step 3: Cross multiply
    827.20x = 1,232.69 × 754.30
  4. Step 4: Simplify right side
    827.20x = 929,818.07
  5. Step 5: Solve for x
    x = 929,818.07/827.20
  6. Step 6: Final answer
    x = 1,124.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.