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Finding the Fourth Proportional to 827.37, 1,239.60 and 502.11

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Solution

The fourth proportional to 827.37, 1,239.60 and 502.11 is: 752.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    827.37 : 1,239.60 = 502.11 : x
  2. Step 2: Convert to fraction form
    827.37/1,239.60 = 502.11/x
  3. Step 3: Cross multiply
    827.37x = 1,239.60 × 502.11
  4. Step 4: Simplify right side
    827.37x = 622,415.56
  5. Step 5: Solve for x
    x = 622,415.56/827.37
  6. Step 6: Final answer
    x = 752.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.