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Finding the Fourth Proportional to 144.35, 216.68 and 75.93

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Solution

The fourth proportional to 144.35, 216.68 and 75.93 is: 113.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.35 : 216.68 = 75.93 : x
  2. Step 2: Convert to fraction form
    144.35/216.68 = 75.93/x
  3. Step 3: Cross multiply
    144.35x = 216.68 × 75.93
  4. Step 4: Simplify right side
    144.35x = 16,451.75
  5. Step 5: Solve for x
    x = 16,451.75/144.35
  6. Step 6: Final answer
    x = 113.97

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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.