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Finding the Fourth Proportional to 427.27, 640.09 and 244.10

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Solution

The fourth proportional to 427.27, 640.09 and 244.10 is: 365.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.27 : 640.09 = 244.10 : x
  2. Step 2: Convert to fraction form
    427.27/640.09 = 244.10/x
  3. Step 3: Cross multiply
    427.27x = 640.09 × 244.10
  4. Step 4: Simplify right side
    427.27x = 156,244.75
  5. Step 5: Solve for x
    x = 156,244.75/427.27
  6. Step 6: Final answer
    x = 365.69

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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.