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Finding the Fourth Proportional to 308.00, 462.46 and 279.30

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Solution

The fourth proportional to 308.00, 462.46 and 279.30 is: 419.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.00 : 462.46 = 279.30 : x
  2. Step 2: Convert to fraction form
    308.00/462.46 = 279.30/x
  3. Step 3: Cross multiply
    308.00x = 462.46 × 279.30
  4. Step 4: Simplify right side
    308.00x = 129,164.04
  5. Step 5: Solve for x
    x = 129,164.04/308.00
  6. Step 6: Final answer
    x = 419.36

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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.