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Finding the Fourth Proportional to 827.89, 1,141.97 and 591.50

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Solution

The fourth proportional to 827.89, 1,141.97 and 591.50 is: 815.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    827.89 : 1,141.97 = 591.50 : x
  2. Step 2: Convert to fraction form
    827.89/1,141.97 = 591.50/x
  3. Step 3: Cross multiply
    827.89x = 1,141.97 × 591.50
  4. Step 4: Simplify right side
    827.89x = 675,475.15
  5. Step 5: Solve for x
    x = 675,475.15/827.89
  6. Step 6: Final answer
    x = 815.90

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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.