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Finding the Fourth Proportional to 206.88, 285.86 and 170.01

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Solution

The fourth proportional to 206.88, 285.86 and 170.01 is: 234.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.88 : 285.86 = 170.01 : x
  2. Step 2: Convert to fraction form
    206.88/285.86 = 170.01/x
  3. Step 3: Cross multiply
    206.88x = 285.86 × 170.01
  4. Step 4: Simplify right side
    206.88x = 48,598.21
  5. Step 5: Solve for x
    x = 48,598.21/206.88
  6. Step 6: Final answer
    x = 234.91

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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.