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Finding the Fourth Proportional to 547.37, 821.64 and 222.96

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Solution

The fourth proportional to 547.37, 821.64 and 222.96 is: 334.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.37 : 821.64 = 222.96 : x
  2. Step 2: Convert to fraction form
    547.37/821.64 = 222.96/x
  3. Step 3: Cross multiply
    547.37x = 821.64 × 222.96
  4. Step 4: Simplify right side
    547.37x = 183,192.85
  5. Step 5: Solve for x
    x = 183,192.85/547.37
  6. Step 6: Final answer
    x = 334.68

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Double scale
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Similar ratio
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1.5x scale

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.