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Finding the Fourth Proportional to 651.33, 976.89 and 218.52

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Solution

The fourth proportional to 651.33, 976.89 and 218.52 is: 327.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.33 : 976.89 = 218.52 : x
  2. Step 2: Convert to fraction form
    651.33/976.89 = 218.52/x
  3. Step 3: Cross multiply
    651.33x = 976.89 × 218.52
  4. Step 4: Simplify right side
    651.33x = 213,470.00
  5. Step 5: Solve for x
    x = 213,470.00/651.33
  6. Step 6: Final answer
    x = 327.74

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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.