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Finding the Fourth Proportional to 145.82, 218.36 and 113.27

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Solution

The fourth proportional to 145.82, 218.36 and 113.27 is: 169.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.82 : 218.36 = 113.27 : x
  2. Step 2: Convert to fraction form
    145.82/218.36 = 113.27/x
  3. Step 3: Cross multiply
    145.82x = 218.36 × 113.27
  4. Step 4: Simplify right side
    145.82x = 24,732.83
  5. Step 5: Solve for x
    x = 24,732.83/145.82
  6. Step 6: Final answer
    x = 169.61

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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.