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Finding the Fourth Proportional to 146.08, 218.36 and 111.49

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Solution

The fourth proportional to 146.08, 218.36 and 111.49 is: 166.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.08 : 218.36 = 111.49 : x
  2. Step 2: Convert to fraction form
    146.08/218.36 = 111.49/x
  3. Step 3: Cross multiply
    146.08x = 218.36 × 111.49
  4. Step 4: Simplify right side
    146.08x = 24,343.84
  5. Step 5: Solve for x
    x = 24,343.84/146.08
  6. Step 6: Final answer
    x = 166.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.