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Finding the Fourth Proportional to 213.23, 293.63 and 189.59

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Solution

The fourth proportional to 213.23, 293.63 and 189.59 is: 261.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.23 : 293.63 = 189.59 : x
  2. Step 2: Convert to fraction form
    213.23/293.63 = 189.59/x
  3. Step 3: Cross multiply
    213.23x = 293.63 × 189.59
  4. Step 4: Simplify right side
    213.23x = 55,668.55
  5. Step 5: Solve for x
    x = 55,668.55/213.23
  6. Step 6: Final answer
    x = 261.07

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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.