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Finding the Fourth Proportional to 540.20, 810.54 and 251.44

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Solution

The fourth proportional to 540.20, 810.54 and 251.44 is: 377.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.20 : 810.54 = 251.44 : x
  2. Step 2: Convert to fraction form
    540.20/810.54 = 251.44/x
  3. Step 3: Cross multiply
    540.20x = 810.54 × 251.44
  4. Step 4: Simplify right side
    540.20x = 203,800.15
  5. Step 5: Solve for x
    x = 203,800.15/540.20
  6. Step 6: Final answer
    x = 377.27

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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.