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Finding the Fourth Proportional to 369.20, 552.76 and 206.28

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Solution

The fourth proportional to 369.20, 552.76 and 206.28 is: 308.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.20 : 552.76 = 206.28 : x
  2. Step 2: Convert to fraction form
    369.20/552.76 = 206.28/x
  3. Step 3: Cross multiply
    369.20x = 552.76 × 206.28
  4. Step 4: Simplify right side
    369.20x = 114,023.33
  5. Step 5: Solve for x
    x = 114,023.33/369.20
  6. Step 6: Final answer
    x = 308.84

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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.