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Finding the Fourth Proportional to 206.97, 285.57 and 124.08

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Solution

The fourth proportional to 206.97, 285.57 and 124.08 is: 171.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.97 : 285.57 = 124.08 : x
  2. Step 2: Convert to fraction form
    206.97/285.57 = 124.08/x
  3. Step 3: Cross multiply
    206.97x = 285.57 × 124.08
  4. Step 4: Simplify right side
    206.97x = 35,433.53
  5. Step 5: Solve for x
    x = 35,433.53/206.97
  6. Step 6: Final answer
    x = 171.20

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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.