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Finding the Fourth Proportional to 548.57, 822.86 and 539.35

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Solution

The fourth proportional to 548.57, 822.86 and 539.35 is: 809.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.57 : 822.86 = 539.35 : x
  2. Step 2: Convert to fraction form
    548.57/822.86 = 539.35/x
  3. Step 3: Cross multiply
    548.57x = 822.86 × 539.35
  4. Step 4: Simplify right side
    548.57x = 443,805.65
  5. Step 5: Solve for x
    x = 443,805.65/548.57
  6. Step 6: Final answer
    x = 809.02

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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.