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Finding the Fourth Proportional to 628.71, 942.73 and 217.73

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Solution

The fourth proportional to 628.71, 942.73 and 217.73 is: 326.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.71 : 942.73 = 217.73 : x
  2. Step 2: Convert to fraction form
    628.71/942.73 = 217.73/x
  3. Step 3: Cross multiply
    628.71x = 942.73 × 217.73
  4. Step 4: Simplify right side
    628.71x = 205,260.60
  5. Step 5: Solve for x
    x = 205,260.60/628.71
  6. Step 6: Final answer
    x = 326.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.