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Finding the Fourth Proportional to 222.70, 332.17 and 207.58

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Solution

The fourth proportional to 222.70, 332.17 and 207.58 is: 309.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.70 : 332.17 = 207.58 : x
  2. Step 2: Convert to fraction form
    222.70/332.17 = 207.58/x
  3. Step 3: Cross multiply
    222.70x = 332.17 × 207.58
  4. Step 4: Simplify right side
    222.70x = 68,951.85
  5. Step 5: Solve for x
    x = 68,951.85/222.70
  6. Step 6: Final answer
    x = 309.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.