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Finding the Fourth Proportional to 547.20, 820.18 and 222.16

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Solution

The fourth proportional to 547.20, 820.18 and 222.16 is: 332.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.20 : 820.18 = 222.16 : x
  2. Step 2: Convert to fraction form
    547.20/820.18 = 222.16/x
  3. Step 3: Cross multiply
    547.20x = 820.18 × 222.16
  4. Step 4: Simplify right side
    547.20x = 182,211.19
  5. Step 5: Solve for x
    x = 182,211.19/547.20
  6. Step 6: Final answer
    x = 332.99

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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.