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Finding the Fourth Proportional to 230.39, 316.19 and 206.54

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Solution

The fourth proportional to 230.39, 316.19 and 206.54 is: 283.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.39 : 316.19 = 206.54 : x
  2. Step 2: Convert to fraction form
    230.39/316.19 = 206.54/x
  3. Step 3: Cross multiply
    230.39x = 316.19 × 206.54
  4. Step 4: Simplify right side
    230.39x = 65,305.88
  5. Step 5: Solve for x
    x = 65,305.88/230.39
  6. Step 6: Final answer
    x = 283.46

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.