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Finding the Fourth Proportional to 200.30, 300.13 and 119.09

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Solution

The fourth proportional to 200.30, 300.13 and 119.09 is: 178.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.30 : 300.13 = 119.09 : x
  2. Step 2: Convert to fraction form
    200.30/300.13 = 119.09/x
  3. Step 3: Cross multiply
    200.30x = 300.13 × 119.09
  4. Step 4: Simplify right side
    200.30x = 35,742.93
  5. Step 5: Solve for x
    x = 35,742.93/200.30
  6. Step 6: Final answer
    x = 178.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.