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Finding the Fourth Proportional to 254.38, 350.67 and 201.70

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Solution

The fourth proportional to 254.38, 350.67 and 201.70 is: 278.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.38 : 350.67 = 201.70 : x
  2. Step 2: Convert to fraction form
    254.38/350.67 = 201.70/x
  3. Step 3: Cross multiply
    254.38x = 350.67 × 201.70
  4. Step 4: Simplify right side
    254.38x = 70,730.14
  5. Step 5: Solve for x
    x = 70,730.14/254.38
  6. Step 6: Final answer
    x = 278.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.