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Finding the Fourth Proportional to 366.20, 548.46 and 310.76

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Solution

The fourth proportional to 366.20, 548.46 and 310.76 is: 465.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.20 : 548.46 = 310.76 : x
  2. Step 2: Convert to fraction form
    366.20/548.46 = 310.76/x
  3. Step 3: Cross multiply
    366.20x = 548.46 × 310.76
  4. Step 4: Simplify right side
    366.20x = 170,439.43
  5. Step 5: Solve for x
    x = 170,439.43/366.20
  6. Step 6: Final answer
    x = 465.43

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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.