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Finding the Fourth Proportional to 206.14, 308.64 and 151.36

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Solution

The fourth proportional to 206.14, 308.64 and 151.36 is: 226.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.14 : 308.64 = 151.36 : x
  2. Step 2: Convert to fraction form
    206.14/308.64 = 151.36/x
  3. Step 3: Cross multiply
    206.14x = 308.64 × 151.36
  4. Step 4: Simplify right side
    206.14x = 46,715.75
  5. Step 5: Solve for x
    x = 46,715.75/206.14
  6. Step 6: Final answer
    x = 226.62

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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.