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Finding the Fourth Proportional to 883.98, 1,325.97 and 679.86

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Solution

The fourth proportional to 883.98, 1,325.97 and 679.86 is: 1,019.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.98 : 1,325.97 = 679.86 : x
  2. Step 2: Convert to fraction form
    883.98/1,325.97 = 679.86/x
  3. Step 3: Cross multiply
    883.98x = 1,325.97 × 679.86
  4. Step 4: Simplify right side
    883.98x = 901,473.96
  5. Step 5: Solve for x
    x = 901,473.96/883.98
  6. Step 6: Final answer
    x = 1,019.79

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Why These Related Problems?

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