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Finding the Fourth Proportional to 144.26, 215.33 and 125.13

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Solution

The fourth proportional to 144.26, 215.33 and 125.13 is: 186.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.26 : 215.33 = 125.13 : x
  2. Step 2: Convert to fraction form
    144.26/215.33 = 125.13/x
  3. Step 3: Cross multiply
    144.26x = 215.33 × 125.13
  4. Step 4: Simplify right side
    144.26x = 26,944.09
  5. Step 5: Solve for x
    x = 26,944.09/144.26
  6. Step 6: Final answer
    x = 186.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.