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Finding the Fourth Proportional to 229.23, 342.20 and 194.76

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Solution

The fourth proportional to 229.23, 342.20 and 194.76 is: 290.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.23 : 342.20 = 194.76 : x
  2. Step 2: Convert to fraction form
    229.23/342.20 = 194.76/x
  3. Step 3: Cross multiply
    229.23x = 342.20 × 194.76
  4. Step 4: Simplify right side
    229.23x = 66,645.90
  5. Step 5: Solve for x
    x = 66,645.90/229.23
  6. Step 6: Final answer
    x = 290.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.