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Finding the Fourth Proportional to 563.82, 845.46 and 255.66

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Solution

The fourth proportional to 563.82, 845.46 and 255.66 is: 383.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.82 : 845.46 = 255.66 : x
  2. Step 2: Convert to fraction form
    563.82/845.46 = 255.66/x
  3. Step 3: Cross multiply
    563.82x = 845.46 × 255.66
  4. Step 4: Simplify right side
    563.82x = 216,150.30
  5. Step 5: Solve for x
    x = 216,150.30/563.82
  6. Step 6: Final answer
    x = 383.37

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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.