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Finding the Fourth Proportional to 650.90, 976.32 and 218.06

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Solution

The fourth proportional to 650.90, 976.32 and 218.06 is: 327.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.90 : 976.32 = 218.06 : x
  2. Step 2: Convert to fraction form
    650.90/976.32 = 218.06/x
  3. Step 3: Cross multiply
    650.90x = 976.32 × 218.06
  4. Step 4: Simplify right side
    650.90x = 212,896.34
  5. Step 5: Solve for x
    x = 212,896.34/650.90
  6. Step 6: Final answer
    x = 327.08

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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.