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Finding the Fourth Proportional to 200.13, 298.78 and 171.25

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Solution

The fourth proportional to 200.13, 298.78 and 171.25 is: 255.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.13 : 298.78 = 171.25 : x
  2. Step 2: Convert to fraction form
    200.13/298.78 = 171.25/x
  3. Step 3: Cross multiply
    200.13x = 298.78 × 171.25
  4. Step 4: Simplify right side
    200.13x = 51,166.08
  5. Step 5: Solve for x
    x = 51,166.08/200.13
  6. Step 6: Final answer
    x = 255.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.