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Finding the Fourth Proportional to 607.90, 911.56 and 222.88

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Solution

The fourth proportional to 607.90, 911.56 and 222.88 is: 334.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.90 : 911.56 = 222.88 : x
  2. Step 2: Convert to fraction form
    607.90/911.56 = 222.88/x
  3. Step 3: Cross multiply
    607.90x = 911.56 × 222.88
  4. Step 4: Simplify right side
    607.90x = 203,168.49
  5. Step 5: Solve for x
    x = 203,168.49/607.90
  6. Step 6: Final answer
    x = 334.21

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Similar ratio
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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.