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Finding the Fourth Proportional to 211.94, 292.33 and 137.25

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Solution

The fourth proportional to 211.94, 292.33 and 137.25 is: 189.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    211.94 : 292.33 = 137.25 : x
  2. Step 2: Convert to fraction form
    211.94/292.33 = 137.25/x
  3. Step 3: Cross multiply
    211.94x = 292.33 × 137.25
  4. Step 4: Simplify right side
    211.94x = 40,122.68
  5. Step 5: Solve for x
    x = 40,122.68/211.94
  6. Step 6: Final answer
    x = 189.31

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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.