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Finding the Fourth Proportional to 548.20, 818.45 and 502.60

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Solution

The fourth proportional to 548.20, 818.45 and 502.60 is: 750.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.20 : 818.45 = 502.60 : x
  2. Step 2: Convert to fraction form
    548.20/818.45 = 502.60/x
  3. Step 3: Cross multiply
    548.20x = 818.45 × 502.60
  4. Step 4: Simplify right side
    548.20x = 411,352.97
  5. Step 5: Solve for x
    x = 411,352.97/548.20
  6. Step 6: Final answer
    x = 750.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.