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Finding the Fourth Proportional to 144.66, 199.44 and 115.25

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Solution

The fourth proportional to 144.66, 199.44 and 115.25 is: 158.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.66 : 199.44 = 115.25 : x
  2. Step 2: Convert to fraction form
    144.66/199.44 = 115.25/x
  3. Step 3: Cross multiply
    144.66x = 199.44 × 115.25
  4. Step 4: Simplify right side
    144.66x = 22,984.46
  5. Step 5: Solve for x
    x = 22,984.46/144.66
  6. Step 6: Final answer
    x = 158.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.