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Finding the Fourth Proportional to 331.99, 458.18 and 201

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Solution

The fourth proportional to 331.99, 458.18 and 201 is: 277.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.99 : 458.18 = 201 : x
  2. Step 2: Convert to fraction form
    331.99/458.18 = 201/x
  3. Step 3: Cross multiply
    331.99x = 458.18 × 201
  4. Step 4: Simplify right side
    331.99x = 92,094.18
  5. Step 5: Solve for x
    x = 92,094.18/331.99
  6. Step 6: Final answer
    x = 277.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.