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Finding the Fourth Proportional to 233.70, 350.60 and 71.39

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Solution

The fourth proportional to 233.70, 350.60 and 71.39 is: 107.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.70 : 350.60 = 71.39 : x
  2. Step 2: Convert to fraction form
    233.70/350.60 = 71.39/x
  3. Step 3: Cross multiply
    233.70x = 350.60 × 71.39
  4. Step 4: Simplify right side
    233.70x = 25,027.22
  5. Step 5: Solve for x
    x = 25,027.22/233.70
  6. Step 6: Final answer
    x = 107.09

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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.