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Finding the Fourth Proportional to 651.17, 976.39 and 445.97

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Solution

The fourth proportional to 651.17, 976.39 and 445.97 is: 668.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.17 : 976.39 = 445.97 : x
  2. Step 2: Convert to fraction form
    651.17/976.39 = 445.97/x
  3. Step 3: Cross multiply
    651.17x = 976.39 × 445.97
  4. Step 4: Simplify right side
    651.17x = 435,440.65
  5. Step 5: Solve for x
    x = 435,440.65/651.17
  6. Step 6: Final answer
    x = 668.71

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.