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Finding the Fourth Proportional to 366.11, 548.13 and 211.76

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Solution

The fourth proportional to 366.11, 548.13 and 211.76 is: 317.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.11 : 548.13 = 211.76 : x
  2. Step 2: Convert to fraction form
    366.11/548.13 = 211.76/x
  3. Step 3: Cross multiply
    366.11x = 548.13 × 211.76
  4. Step 4: Simplify right side
    366.11x = 116,072.01
  5. Step 5: Solve for x
    x = 116,072.01/366.11
  6. Step 6: Final answer
    x = 317.04

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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.