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Finding the Fourth Proportional to 254.30, 350.87 and 202.25

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Solution

The fourth proportional to 254.30, 350.87 and 202.25 is: 279.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.30 : 350.87 = 202.25 : x
  2. Step 2: Convert to fraction form
    254.30/350.87 = 202.25/x
  3. Step 3: Cross multiply
    254.30x = 350.87 × 202.25
  4. Step 4: Simplify right side
    254.30x = 70,960.69
  5. Step 5: Solve for x
    x = 70,960.69/254.30
  6. Step 6: Final answer
    x = 279.05

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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.