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Finding the Fourth Proportional to 200.64, 300.48 and 170.56

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Solution

The fourth proportional to 200.64, 300.48 and 170.56 is: 255.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.64 : 300.48 = 170.56 : x
  2. Step 2: Convert to fraction form
    200.64/300.48 = 170.56/x
  3. Step 3: Cross multiply
    200.64x = 300.48 × 170.56
  4. Step 4: Simplify right side
    200.64x = 51,249.87
  5. Step 5: Solve for x
    x = 51,249.87/200.64
  6. Step 6: Final answer
    x = 255.43

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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.