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Finding the Fourth Proportional to 547.45, 820.46 and 222.43

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Solution

The fourth proportional to 547.45, 820.46 and 222.43 is: 333.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.45 : 820.46 = 222.43 : x
  2. Step 2: Convert to fraction form
    547.45/820.46 = 222.43/x
  3. Step 3: Cross multiply
    547.45x = 820.46 × 222.43
  4. Step 4: Simplify right side
    547.45x = 182,494.92
  5. Step 5: Solve for x
    x = 182,494.92/547.45
  6. Step 6: Final answer
    x = 333.35

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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.