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Finding the Fourth Proportional to 144.68, 216.63 and 133.83

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Solution

The fourth proportional to 144.68, 216.63 and 133.83 is: 200.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.68 : 216.63 = 133.83 : x
  2. Step 2: Convert to fraction form
    144.68/216.63 = 133.83/x
  3. Step 3: Cross multiply
    144.68x = 216.63 × 133.83
  4. Step 4: Simplify right side
    144.68x = 28,991.59
  5. Step 5: Solve for x
    x = 28,991.59/144.68
  6. Step 6: Final answer
    x = 200.39

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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.