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Finding the Fourth Proportional to 427.24, 640.26 and 244.36

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Solution

The fourth proportional to 427.24, 640.26 and 244.36 is: 366.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.24 : 640.26 = 244.36 : x
  2. Step 2: Convert to fraction form
    427.24/640.26 = 244.36/x
  3. Step 3: Cross multiply
    427.24x = 640.26 × 244.36
  4. Step 4: Simplify right side
    427.24x = 156,453.93
  5. Step 5: Solve for x
    x = 156,453.93/427.24
  6. Step 6: Final answer
    x = 366.20

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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.