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Finding the Fourth Proportional to 394.67, 544.53 and 226.62

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Solution

The fourth proportional to 394.67, 544.53 and 226.62 is: 312.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.67 : 544.53 = 226.62 : x
  2. Step 2: Convert to fraction form
    394.67/544.53 = 226.62/x
  3. Step 3: Cross multiply
    394.67x = 544.53 × 226.62
  4. Step 4: Simplify right side
    394.67x = 123,401.39
  5. Step 5: Solve for x
    x = 123,401.39/394.67
  6. Step 6: Final answer
    x = 312.67

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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.