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Finding the Fourth Proportional to 149.96, 205.62 and 146.72

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Solution

The fourth proportional to 149.96, 205.62 and 146.72 is: 201.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.96 : 205.62 = 146.72 : x
  2. Step 2: Convert to fraction form
    149.96/205.62 = 146.72/x
  3. Step 3: Cross multiply
    149.96x = 205.62 × 146.72
  4. Step 4: Simplify right side
    149.96x = 30,167.54
  5. Step 5: Solve for x
    x = 30,167.54/149.96
  6. Step 6: Final answer
    x = 201.18

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.