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Finding the Fourth Proportional to 366.69, 505.85 and 217.25

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Solution

The fourth proportional to 366.69, 505.85 and 217.25 is: 299.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.69 : 505.85 = 217.25 : x
  2. Step 2: Convert to fraction form
    366.69/505.85 = 217.25/x
  3. Step 3: Cross multiply
    366.69x = 505.85 × 217.25
  4. Step 4: Simplify right side
    366.69x = 109,892.30
  5. Step 5: Solve for x
    x = 109,892.30/366.69
  6. Step 6: Final answer
    x = 299.69

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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.