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Finding the Fourth Proportional to 667.73, 1,000.02 and 374.78

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Solution

The fourth proportional to 667.73, 1,000.02 and 374.78 is: 561.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.73 : 1,000.02 = 374.78 : x
  2. Step 2: Convert to fraction form
    667.73/1,000.02 = 374.78/x
  3. Step 3: Cross multiply
    667.73x = 1,000.02 × 374.78
  4. Step 4: Simplify right side
    667.73x = 374,787.50
  5. Step 5: Solve for x
    x = 374,787.50/667.73
  6. Step 6: Final answer
    x = 561.29

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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.