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Finding the Fourth Proportional to 582.78, 872.94 and 452.31

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Solution

The fourth proportional to 582.78, 872.94 and 452.31 is: 677.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.78 : 872.94 = 452.31 : x
  2. Step 2: Convert to fraction form
    582.78/872.94 = 452.31/x
  3. Step 3: Cross multiply
    582.78x = 872.94 × 452.31
  4. Step 4: Simplify right side
    582.78x = 394,839.49
  5. Step 5: Solve for x
    x = 394,839.49/582.78
  6. Step 6: Final answer
    x = 677.51

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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.