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Finding the Fourth Proportional to 563.52, 845.55 and 255.47

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Solution

The fourth proportional to 563.52, 845.55 and 255.47 is: 383.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.52 : 845.55 = 255.47 : x
  2. Step 2: Convert to fraction form
    563.52/845.55 = 255.47/x
  3. Step 3: Cross multiply
    563.52x = 845.55 × 255.47
  4. Step 4: Simplify right side
    563.52x = 216,008.43
  5. Step 5: Solve for x
    x = 216,008.43/563.52
  6. Step 6: Final answer
    x = 383.32

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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.