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Finding the Fourth Proportional to 206.39, 307.38 and 203.96

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Solution

The fourth proportional to 206.39, 307.38 and 203.96 is: 303.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.39 : 307.38 = 203.96 : x
  2. Step 2: Convert to fraction form
    206.39/307.38 = 203.96/x
  3. Step 3: Cross multiply
    206.39x = 307.38 × 203.96
  4. Step 4: Simplify right side
    206.39x = 62,694.76
  5. Step 5: Solve for x
    x = 62,694.76/206.39
  6. Step 6: Final answer
    x = 303.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.