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Finding the Fourth Proportional to 308.93, 425.90 and 226.04

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Solution

The fourth proportional to 308.93, 425.90 and 226.04 is: 311.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.93 : 425.90 = 226.04 : x
  2. Step 2: Convert to fraction form
    308.93/425.90 = 226.04/x
  3. Step 3: Cross multiply
    308.93x = 425.90 × 226.04
  4. Step 4: Simplify right side
    308.93x = 96,267.18
  5. Step 5: Solve for x
    x = 96,267.18/308.93
  6. Step 6: Final answer
    x = 311.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.