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Finding the Fourth Proportional to 200.21, 300.14 and 150.69

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Solution

The fourth proportional to 200.21, 300.14 and 150.69 is: 225.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.21 : 300.14 = 150.69 : x
  2. Step 2: Convert to fraction form
    200.21/300.14 = 150.69/x
  3. Step 3: Cross multiply
    200.21x = 300.14 × 150.69
  4. Step 4: Simplify right side
    200.21x = 45,227.34
  5. Step 5: Solve for x
    x = 45,227.34/200.21
  6. Step 6: Final answer
    x = 225.91

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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.