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Finding the Fourth Proportional to 628.00, 942.07 and 217.09

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Solution

The fourth proportional to 628.00, 942.07 and 217.09 is: 325.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.00 : 942.07 = 217.09 : x
  2. Step 2: Convert to fraction form
    628.00/942.07 = 217.09/x
  3. Step 3: Cross multiply
    628.00x = 942.07 × 217.09
  4. Step 4: Simplify right side
    628.00x = 204,511.08
  5. Step 5: Solve for x
    x = 204,511.08/628.00
  6. Step 6: Final answer
    x = 325.66

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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.