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Finding the Fourth Proportional to 241.71, 362.49 and 85.51

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Solution

The fourth proportional to 241.71, 362.49 and 85.51 is: 128.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.71 : 362.49 = 85.51 : x
  2. Step 2: Convert to fraction form
    241.71/362.49 = 85.51/x
  3. Step 3: Cross multiply
    241.71x = 362.49 × 85.51
  4. Step 4: Simplify right side
    241.71x = 30,996.52
  5. Step 5: Solve for x
    x = 30,996.52/241.71
  6. Step 6: Final answer
    x = 128.24

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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.