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Finding the Fourth Proportional to 149.20, 204.58 and 145.96

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Solution

The fourth proportional to 149.20, 204.58 and 145.96 is: 200.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.20 : 204.58 = 145.96 : x
  2. Step 2: Convert to fraction form
    149.20/204.58 = 145.96/x
  3. Step 3: Cross multiply
    149.20x = 204.58 × 145.96
  4. Step 4: Simplify right side
    149.20x = 29,860.50
  5. Step 5: Solve for x
    x = 29,860.50/149.20
  6. Step 6: Final answer
    x = 200.14

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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.