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Finding the Fourth Proportional to 650.87, 976.49 and 260.90

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Solution

The fourth proportional to 650.87, 976.49 and 260.90 is: 391.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.87 : 976.49 = 260.90 : x
  2. Step 2: Convert to fraction form
    650.87/976.49 = 260.90/x
  3. Step 3: Cross multiply
    650.87x = 976.49 × 260.90
  4. Step 4: Simplify right side
    650.87x = 254,764.94
  5. Step 5: Solve for x
    x = 254,764.94/650.87
  6. Step 6: Final answer
    x = 391.42

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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.