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Finding the Fourth Proportional to 254.14, 350.72 and 155.95

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Solution

The fourth proportional to 254.14, 350.72 and 155.95 is: 215.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.14 : 350.72 = 155.95 : x
  2. Step 2: Convert to fraction form
    254.14/350.72 = 155.95/x
  3. Step 3: Cross multiply
    254.14x = 350.72 × 155.95
  4. Step 4: Simplify right side
    254.14x = 54,694.78
  5. Step 5: Solve for x
    x = 54,694.78/254.14
  6. Step 6: Final answer
    x = 215.22

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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.