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Finding the Fourth Proportional to 308.97, 463.16 and 154.67

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Solution

The fourth proportional to 308.97, 463.16 and 154.67 is: 231.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.97 : 463.16 = 154.67 : x
  2. Step 2: Convert to fraction form
    308.97/463.16 = 154.67/x
  3. Step 3: Cross multiply
    308.97x = 463.16 × 154.67
  4. Step 4: Simplify right side
    308.97x = 71,635.03
  5. Step 5: Solve for x
    x = 71,635.03/308.97
  6. Step 6: Final answer
    x = 231.85

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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.