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Finding the Fourth Proportional to 241.39, 362.13 and 138.70

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Solution

The fourth proportional to 241.39, 362.13 and 138.70 is: 208.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.39 : 362.13 = 138.70 : x
  2. Step 2: Convert to fraction form
    241.39/362.13 = 138.70/x
  3. Step 3: Cross multiply
    241.39x = 362.13 × 138.70
  4. Step 4: Simplify right side
    241.39x = 50,227.43
  5. Step 5: Solve for x
    x = 50,227.43/241.39
  6. Step 6: Final answer
    x = 208.08

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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.