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Finding the Fourth Proportional to 213.38, 293.82 and 192.80

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Solution

The fourth proportional to 213.38, 293.82 and 192.80 is: 265.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.38 : 293.82 = 192.80 : x
  2. Step 2: Convert to fraction form
    213.38/293.82 = 192.80/x
  3. Step 3: Cross multiply
    213.38x = 293.82 × 192.80
  4. Step 4: Simplify right side
    213.38x = 56,648.50
  5. Step 5: Solve for x
    x = 56,648.50/213.38
  6. Step 6: Final answer
    x = 265.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.