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Finding the Fourth Proportional to 254.34, 351.03 and 143.86

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Solution

The fourth proportional to 254.34, 351.03 and 143.86 is: 198.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.34 : 351.03 = 143.86 : x
  2. Step 2: Convert to fraction form
    254.34/351.03 = 143.86/x
  3. Step 3: Cross multiply
    254.34x = 351.03 × 143.86
  4. Step 4: Simplify right side
    254.34x = 50,498.30
  5. Step 5: Solve for x
    x = 50,498.30/254.34
  6. Step 6: Final answer
    x = 198.55

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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.