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Finding the Fourth Proportional to 827.27, 1,141.62 and 454.25

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Solution

The fourth proportional to 827.27, 1,141.62 and 454.25 is: 626.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    827.27 : 1,141.62 = 454.25 : x
  2. Step 2: Convert to fraction form
    827.27/1,141.62 = 454.25/x
  3. Step 3: Cross multiply
    827.27x = 1,141.62 × 454.25
  4. Step 4: Simplify right side
    827.27x = 518,578.61
  5. Step 5: Solve for x
    x = 518,578.61/827.27
  6. Step 6: Final answer
    x = 626.86

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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.