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Finding the Fourth Proportional to 200.14, 300.54 and 190.66

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Solution

The fourth proportional to 200.14, 300.54 and 190.66 is: 286.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.14 : 300.54 = 190.66 : x
  2. Step 2: Convert to fraction form
    200.14/300.54 = 190.66/x
  3. Step 3: Cross multiply
    200.14x = 300.54 × 190.66
  4. Step 4: Simplify right side
    200.14x = 57,300.96
  5. Step 5: Solve for x
    x = 57,300.96/200.14
  6. Step 6: Final answer
    x = 286.30

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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.