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Finding the Fourth Proportional to 665.91, 922.68 and 650.79

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Solution

The fourth proportional to 665.91, 922.68 and 650.79 is: 901.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.91 : 922.68 = 650.79 : x
  2. Step 2: Convert to fraction form
    665.91/922.68 = 650.79/x
  3. Step 3: Cross multiply
    665.91x = 922.68 × 650.79
  4. Step 4: Simplify right side
    665.91x = 600,470.92
  5. Step 5: Solve for x
    x = 600,470.92/665.91
  6. Step 6: Final answer
    x = 901.73

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.