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Finding the Fourth Proportional to 379.57, 523.62 and 222.10

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Solution

The fourth proportional to 379.57, 523.62 and 222.10 is: 306.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.57 : 523.62 = 222.10 : x
  2. Step 2: Convert to fraction form
    379.57/523.62 = 222.10/x
  3. Step 3: Cross multiply
    379.57x = 523.62 × 222.10
  4. Step 4: Simplify right side
    379.57x = 116,294.89
  5. Step 5: Solve for x
    x = 116,294.89/379.57
  6. Step 6: Final answer
    x = 306.39

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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.