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Finding the Fourth Proportional to 382.77, 574.56 and 220.77

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Solution

The fourth proportional to 382.77, 574.56 and 220.77 is: 331.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.77 : 574.56 = 220.77 : x
  2. Step 2: Convert to fraction form
    382.77/574.56 = 220.77/x
  3. Step 3: Cross multiply
    382.77x = 574.56 × 220.77
  4. Step 4: Simplify right side
    382.77x = 126,845.61
  5. Step 5: Solve for x
    x = 126,845.61/382.77
  6. Step 6: Final answer
    x = 331.39

Related Problems

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Half scale
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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.