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Finding the Fourth Proportional to 366.49, 548.37 and 219.70

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Solution

The fourth proportional to 366.49, 548.37 and 219.70 is: 328.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.49 : 548.37 = 219.70 : x
  2. Step 2: Convert to fraction form
    366.49/548.37 = 219.70/x
  3. Step 3: Cross multiply
    366.49x = 548.37 × 219.70
  4. Step 4: Simplify right side
    366.49x = 120,476.89
  5. Step 5: Solve for x
    x = 120,476.89/366.49
  6. Step 6: Final answer
    x = 328.73

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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.