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Finding the Fourth Proportional to 308.58, 462.87 and 239.94

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Solution

The fourth proportional to 308.58, 462.87 and 239.94 is: 359.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.58 : 462.87 = 239.94 : x
  2. Step 2: Convert to fraction form
    308.58/462.87 = 239.94/x
  3. Step 3: Cross multiply
    308.58x = 462.87 × 239.94
  4. Step 4: Simplify right side
    308.58x = 111,061.03
  5. Step 5: Solve for x
    x = 111,061.03/308.58
  6. Step 6: Final answer
    x = 359.91

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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.