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Finding the Fourth Proportional to 701.26, 1,051.38 and 331.09

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Solution

The fourth proportional to 701.26, 1,051.38 and 331.09 is: 496.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.26 : 1,051.38 = 331.09 : x
  2. Step 2: Convert to fraction form
    701.26/1,051.38 = 331.09/x
  3. Step 3: Cross multiply
    701.26x = 1,051.38 × 331.09
  4. Step 4: Simplify right side
    701.26x = 348,101.40
  5. Step 5: Solve for x
    x = 348,101.40/701.26
  6. Step 6: Final answer
    x = 496.39

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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.