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Finding the Fourth Proportional to 206.68, 309.68 and 183.60

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Solution

The fourth proportional to 206.68, 309.68 and 183.60 is: 275.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.68 : 309.68 = 183.60 : x
  2. Step 2: Convert to fraction form
    206.68/309.68 = 183.60/x
  3. Step 3: Cross multiply
    206.68x = 309.68 × 183.60
  4. Step 4: Simplify right side
    206.68x = 56,857.25
  5. Step 5: Solve for x
    x = 56,857.25/206.68
  6. Step 6: Final answer
    x = 275.10

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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.