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Finding the Fourth Proportional to 548.69, 822.77 and 457.43

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Solution

The fourth proportional to 548.69, 822.77 and 457.43 is: 685.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.69 : 822.77 = 457.43 : x
  2. Step 2: Convert to fraction form
    548.69/822.77 = 457.43/x
  3. Step 3: Cross multiply
    548.69x = 822.77 × 457.43
  4. Step 4: Simplify right side
    548.69x = 376,359.45
  5. Step 5: Solve for x
    x = 376,359.45/548.69
  6. Step 6: Final answer
    x = 685.92

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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.