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Finding the Fourth Proportional to 662.90, 879.07 and 662.90

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Solution

The fourth proportional to 662.90, 879.07 and 662.90 is: 879.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.90 : 879.07 = 662.90 : x
  2. Step 2: Convert to fraction form
    662.90/879.07 = 662.90/x
  3. Step 3: Cross multiply
    662.90x = 879.07 × 662.90
  4. Step 4: Simplify right side
    662.90x = 582,732.19
  5. Step 5: Solve for x
    x = 582,732.19/662.90
  6. Step 6: Final answer
    x = 879.07

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.