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Finding the Fourth Proportional to 144.90, 217.32 and 63.66

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Solution

The fourth proportional to 144.90, 217.32 and 63.66 is: 95.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.90 : 217.32 = 63.66 : x
  2. Step 2: Convert to fraction form
    144.90/217.32 = 63.66/x
  3. Step 3: Cross multiply
    144.90x = 217.32 × 63.66
  4. Step 4: Simplify right side
    144.90x = 13,834.59
  5. Step 5: Solve for x
    x = 13,834.59/144.90
  6. Step 6: Final answer
    x = 95.48

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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.