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Finding the Fourth Proportional to 161.15, 241.08 and 144.74

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Solution

The fourth proportional to 161.15, 241.08 and 144.74 is: 216.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.15 : 241.08 = 144.74 : x
  2. Step 2: Convert to fraction form
    161.15/241.08 = 144.74/x
  3. Step 3: Cross multiply
    161.15x = 241.08 × 144.74
  4. Step 4: Simplify right side
    161.15x = 34,893.92
  5. Step 5: Solve for x
    x = 34,893.92/161.15
  6. Step 6: Final answer
    x = 216.53

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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.