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Finding the Fourth Proportional to 146.05, 218.16 and 131.58

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Solution

The fourth proportional to 146.05, 218.16 and 131.58 is: 196.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.05 : 218.16 = 131.58 : x
  2. Step 2: Convert to fraction form
    146.05/218.16 = 131.58/x
  3. Step 3: Cross multiply
    146.05x = 218.16 × 131.58
  4. Step 4: Simplify right side
    146.05x = 28,705.49
  5. Step 5: Solve for x
    x = 28,705.49/146.05
  6. Step 6: Final answer
    x = 196.55

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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.