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Finding the Fourth Proportional to 144.48, 217.48 and 124.62

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Solution

The fourth proportional to 144.48, 217.48 and 124.62 is: 187.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.48 : 217.48 = 124.62 : x
  2. Step 2: Convert to fraction form
    144.48/217.48 = 124.62/x
  3. Step 3: Cross multiply
    144.48x = 217.48 × 124.62
  4. Step 4: Simplify right side
    144.48x = 27,102.36
  5. Step 5: Solve for x
    x = 27,102.36/144.48
  6. Step 6: Final answer
    x = 187.59

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.