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Finding the Fourth Proportional to 564.12, 845.87 and 198.81

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Solution

The fourth proportional to 564.12, 845.87 and 198.81 is: 298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.12 : 845.87 = 198.81 : x
  2. Step 2: Convert to fraction form
    564.12/845.87 = 198.81/x
  3. Step 3: Cross multiply
    564.12x = 845.87 × 198.81
  4. Step 4: Simplify right side
    564.12x = 168,166.42
  5. Step 5: Solve for x
    x = 168,166.42/564.12
  6. Step 6: Final answer
    x = 298.10

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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.