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Finding the Fourth Proportional to 382.44, 573.78 and 126.12

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Solution

The fourth proportional to 382.44, 573.78 and 126.12 is: 189.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.44 : 573.78 = 126.12 : x
  2. Step 2: Convert to fraction form
    382.44/573.78 = 126.12/x
  3. Step 3: Cross multiply
    382.44x = 573.78 × 126.12
  4. Step 4: Simplify right side
    382.44x = 72,365.13
  5. Step 5: Solve for x
    x = 72,365.13/382.44
  6. Step 6: Final answer
    x = 189.22

Related Problems

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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.