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Finding the Fourth Proportional to 199.97, 275.79 and 167.18

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Solution

The fourth proportional to 199.97, 275.79 and 167.18 is: 230.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.97 : 275.79 = 167.18 : x
  2. Step 2: Convert to fraction form
    199.97/275.79 = 167.18/x
  3. Step 3: Cross multiply
    199.97x = 275.79 × 167.18
  4. Step 4: Simplify right side
    199.97x = 46,106.57
  5. Step 5: Solve for x
    x = 46,106.57/199.97
  6. Step 6: Final answer
    x = 230.57

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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.