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Finding the Fourth Proportional to 193.48, 266.60 and 144.30

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Solution

The fourth proportional to 193.48, 266.60 and 144.30 is: 198.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.48 : 266.60 = 144.30 : x
  2. Step 2: Convert to fraction form
    193.48/266.60 = 144.30/x
  3. Step 3: Cross multiply
    193.48x = 266.60 × 144.30
  4. Step 4: Simplify right side
    193.48x = 38,470.38
  5. Step 5: Solve for x
    x = 38,470.38/193.48
  6. Step 6: Final answer
    x = 198.83

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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.