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Finding the Fourth Proportional to 662.70, 994.05 and 272.75

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Solution

The fourth proportional to 662.70, 994.05 and 272.75 is: 409.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.70 : 994.05 = 272.75 : x
  2. Step 2: Convert to fraction form
    662.70/994.05 = 272.75/x
  3. Step 3: Cross multiply
    662.70x = 994.05 × 272.75
  4. Step 4: Simplify right side
    662.70x = 271,127.14
  5. Step 5: Solve for x
    x = 271,127.14/662.70
  6. Step 6: Final answer
    x = 409.13

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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.