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Finding the Fourth Proportional to 667.45, 1,000.97 and 277.44

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Solution

The fourth proportional to 667.45, 1,000.97 and 277.44 is: 416.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.45 : 1,000.97 = 277.44 : x
  2. Step 2: Convert to fraction form
    667.45/1,000.97 = 277.44/x
  3. Step 3: Cross multiply
    667.45x = 1,000.97 × 277.44
  4. Step 4: Simplify right side
    667.45x = 277,709.12
  5. Step 5: Solve for x
    x = 277,709.12/667.45
  6. Step 6: Final answer
    x = 416.07

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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.