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Finding the Fourth Proportional to 241.86, 362.42 and 139.20

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Solution

The fourth proportional to 241.86, 362.42 and 139.20 is: 208.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.86 : 362.42 = 139.20 : x
  2. Step 2: Convert to fraction form
    241.86/362.42 = 139.20/x
  3. Step 3: Cross multiply
    241.86x = 362.42 × 139.20
  4. Step 4: Simplify right side
    241.86x = 50,448.86
  5. Step 5: Solve for x
    x = 50,448.86/241.86
  6. Step 6: Final answer
    x = 208.59

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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.