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Finding the Fourth Proportional to 666.17, 923.60 and 629.27

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Solution

The fourth proportional to 666.17, 923.60 and 629.27 is: 872.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.17 : 923.60 = 629.27 : x
  2. Step 2: Convert to fraction form
    666.17/923.60 = 629.27/x
  3. Step 3: Cross multiply
    666.17x = 923.60 × 629.27
  4. Step 4: Simplify right side
    666.17x = 581,194.19
  5. Step 5: Solve for x
    x = 581,194.19/666.17
  6. Step 6: Final answer
    x = 872.44

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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.