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Finding the Fourth Proportional to 144.86, 217.36 and 63.69

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Solution

The fourth proportional to 144.86, 217.36 and 63.69 is: 95.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.86 : 217.36 = 63.69 : x
  2. Step 2: Convert to fraction form
    144.86/217.36 = 63.69/x
  3. Step 3: Cross multiply
    144.86x = 217.36 × 63.69
  4. Step 4: Simplify right side
    144.86x = 13,843.66
  5. Step 5: Solve for x
    x = 13,843.66/144.86
  6. Step 6: Final answer
    x = 95.57

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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.