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Finding the Fourth Proportional to 563.31, 845.12 and 198.12

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Solution

The fourth proportional to 563.31, 845.12 and 198.12 is: 297.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.31 : 845.12 = 198.12 : x
  2. Step 2: Convert to fraction form
    563.31/845.12 = 198.12/x
  3. Step 3: Cross multiply
    563.31x = 845.12 × 198.12
  4. Step 4: Simplify right side
    563.31x = 167,434.18
  5. Step 5: Solve for x
    x = 167,434.18/563.31
  6. Step 6: Final answer
    x = 297.23

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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.