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Finding the Fourth Proportional to 206.75, 309.64 and 151.01

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Solution

The fourth proportional to 206.75, 309.64 and 151.01 is: 226.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.75 : 309.64 = 151.01 : x
  2. Step 2: Convert to fraction form
    206.75/309.64 = 151.01/x
  3. Step 3: Cross multiply
    206.75x = 309.64 × 151.01
  4. Step 4: Simplify right side
    206.75x = 46,757.98
  5. Step 5: Solve for x
    x = 46,757.98/206.75
  6. Step 6: Final answer
    x = 226.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.