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Finding the Fourth Proportional to 366.14, 505.24 and 218.74

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Solution

The fourth proportional to 366.14, 505.24 and 218.74 is: 301.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.14 : 505.24 = 218.74 : x
  2. Step 2: Convert to fraction form
    366.14/505.24 = 218.74/x
  3. Step 3: Cross multiply
    366.14x = 505.24 × 218.74
  4. Step 4: Simplify right side
    366.14x = 110,516.20
  5. Step 5: Solve for x
    x = 110,516.20/366.14
  6. Step 6: Final answer
    x = 301.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.