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Finding the Fourth Proportional to 351.55, 484.95 and 227.17

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Solution

The fourth proportional to 351.55, 484.95 and 227.17 is: 313.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.55 : 484.95 = 227.17 : x
  2. Step 2: Convert to fraction form
    351.55/484.95 = 227.17/x
  3. Step 3: Cross multiply
    351.55x = 484.95 × 227.17
  4. Step 4: Simplify right side
    351.55x = 110,166.09
  5. Step 5: Solve for x
    x = 110,166.09/351.55
  6. Step 6: Final answer
    x = 313.37

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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.