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Finding the Fourth Proportional to 351.30, 485.05 and 227.03

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Solution

The fourth proportional to 351.30, 485.05 and 227.03 is: 313.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.30 : 485.05 = 227.03 : x
  2. Step 2: Convert to fraction form
    351.30/485.05 = 227.03/x
  3. Step 3: Cross multiply
    351.30x = 485.05 × 227.03
  4. Step 4: Simplify right side
    351.30x = 110,122.40
  5. Step 5: Solve for x
    x = 110,122.40/351.30
  6. Step 6: Final answer
    x = 313.47

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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.