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Finding the Fourth Proportional to 366.66, 506.09 and 219.30

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Solution

The fourth proportional to 366.66, 506.09 and 219.30 is: 302.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.66 : 506.09 = 219.30 : x
  2. Step 2: Convert to fraction form
    366.66/506.09 = 219.30/x
  3. Step 3: Cross multiply
    366.66x = 506.09 × 219.30
  4. Step 4: Simplify right side
    366.66x = 110,985.54
  5. Step 5: Solve for x
    x = 110,985.54/366.66
  6. Step 6: Final answer
    x = 302.69

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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.