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Finding the Fourth Proportional to 541.05, 811.88 and 252.49

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Solution

The fourth proportional to 541.05, 811.88 and 252.49 is: 378.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.05 : 811.88 = 252.49 : x
  2. Step 2: Convert to fraction form
    541.05/811.88 = 252.49/x
  3. Step 3: Cross multiply
    541.05x = 811.88 × 252.49
  4. Step 4: Simplify right side
    541.05x = 204,991.58
  5. Step 5: Solve for x
    x = 204,991.58/541.05
  6. Step 6: Final answer
    x = 378.88

Related Problems

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Half scale
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Double scale
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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.