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Finding the Fourth Proportional to 254.40, 350.10 and 199.11

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Solution

The fourth proportional to 254.40, 350.10 and 199.11 is: 274.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.40 : 350.10 = 199.11 : x
  2. Step 2: Convert to fraction form
    254.40/350.10 = 199.11/x
  3. Step 3: Cross multiply
    254.40x = 350.10 × 199.11
  4. Step 4: Simplify right side
    254.40x = 69,708.41
  5. Step 5: Solve for x
    x = 69,708.41/254.40
  6. Step 6: Final answer
    x = 274.01

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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.