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Finding the Fourth Proportional to 548.28, 818.66 and 533.70

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Solution

The fourth proportional to 548.28, 818.66 and 533.70 is: 796.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.28 : 818.66 = 533.70 : x
  2. Step 2: Convert to fraction form
    548.28/818.66 = 533.70/x
  3. Step 3: Cross multiply
    548.28x = 818.66 × 533.70
  4. Step 4: Simplify right side
    548.28x = 436,920.18
  5. Step 5: Solve for x
    x = 436,920.18/548.28
  6. Step 6: Final answer
    x = 796.89

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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.