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Finding the Fourth Proportional to 661.14, 996.73 and 625.86

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Solution

The fourth proportional to 661.14, 996.73 and 625.86 is: 943.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    661.14 : 996.73 = 625.86 : x
  2. Step 2: Convert to fraction form
    661.14/996.73 = 625.86/x
  3. Step 3: Cross multiply
    661.14x = 996.73 × 625.86
  4. Step 4: Simplify right side
    661.14x = 623,813.44
  5. Step 5: Solve for x
    x = 623,813.44/661.14
  6. Step 6: Final answer
    x = 943.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.