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Finding the Fourth Proportional to 344.72, 475.69 and 220.38

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Solution

The fourth proportional to 344.72, 475.69 and 220.38 is: 304.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.72 : 475.69 = 220.38 : x
  2. Step 2: Convert to fraction form
    344.72/475.69 = 220.38/x
  3. Step 3: Cross multiply
    344.72x = 475.69 × 220.38
  4. Step 4: Simplify right side
    344.72x = 104,832.56
  5. Step 5: Solve for x
    x = 104,832.56/344.72
  6. Step 6: Final answer
    x = 304.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.