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Finding the Fourth Proportional to 146.45, 202.01 and 105.05

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Solution

The fourth proportional to 146.45, 202.01 and 105.05 is: 144.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.45 : 202.01 = 105.05 : x
  2. Step 2: Convert to fraction form
    146.45/202.01 = 105.05/x
  3. Step 3: Cross multiply
    146.45x = 202.01 × 105.05
  4. Step 4: Simplify right side
    146.45x = 21,219.62
  5. Step 5: Solve for x
    x = 21,219.62/146.45
  6. Step 6: Final answer
    x = 144.90

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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.