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Finding the Fourth Proportional to 161.47, 241.80 and 118.27

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Solution

The fourth proportional to 161.47, 241.80 and 118.27 is: 177.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.47 : 241.80 = 118.27 : x
  2. Step 2: Convert to fraction form
    161.47/241.80 = 118.27/x
  3. Step 3: Cross multiply
    161.47x = 241.80 × 118.27
  4. Step 4: Simplify right side
    161.47x = 28,597.69
  5. Step 5: Solve for x
    x = 28,597.69/161.47
  6. Step 6: Final answer
    x = 177.11

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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.