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Finding the Fourth Proportional to 164.48, 226.78 and 109.22

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Solution

The fourth proportional to 164.48, 226.78 and 109.22 is: 150.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.48 : 226.78 = 109.22 : x
  2. Step 2: Convert to fraction form
    164.48/226.78 = 109.22/x
  3. Step 3: Cross multiply
    164.48x = 226.78 × 109.22
  4. Step 4: Simplify right side
    164.48x = 24,767.50
  5. Step 5: Solve for x
    x = 24,767.50/164.48
  6. Step 6: Final answer
    x = 150.59

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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.