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Finding the Fourth Proportional to 344.16, 475.16 and 239.21

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Solution

The fourth proportional to 344.16, 475.16 and 239.21 is: 330.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.16 : 475.16 = 239.21 : x
  2. Step 2: Convert to fraction form
    344.16/475.16 = 239.21/x
  3. Step 3: Cross multiply
    344.16x = 475.16 × 239.21
  4. Step 4: Simplify right side
    344.16x = 113,663.02
  5. Step 5: Solve for x
    x = 113,663.02/344.16
  6. Step 6: Final answer
    x = 330.26

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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.