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Finding the Fourth Proportional to 232.80, 350.70 and 213.12

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Solution

The fourth proportional to 232.80, 350.70 and 213.12 is: 321.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.80 : 350.70 = 213.12 : x
  2. Step 2: Convert to fraction form
    232.80/350.70 = 213.12/x
  3. Step 3: Cross multiply
    232.80x = 350.70 × 213.12
  4. Step 4: Simplify right side
    232.80x = 74,741.18
  5. Step 5: Solve for x
    x = 74,741.18/232.80
  6. Step 6: Final answer
    x = 321.05

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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.