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Finding the Fourth Proportional to 240.64, 334.31 and 238.39

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Solution

The fourth proportional to 240.64, 334.31 and 238.39 is: 331.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.64 : 334.31 = 238.39 : x
  2. Step 2: Convert to fraction form
    240.64/334.31 = 238.39/x
  3. Step 3: Cross multiply
    240.64x = 334.31 × 238.39
  4. Step 4: Simplify right side
    240.64x = 79,695.47
  5. Step 5: Solve for x
    x = 79,695.47/240.64
  6. Step 6: Final answer
    x = 331.18

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.