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Finding the Fourth Proportional to 787.26, 1,181.49 and 300.42

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Solution

The fourth proportional to 787.26, 1,181.49 and 300.42 is: 450.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    787.26 : 1,181.49 = 300.42 : x
  2. Step 2: Convert to fraction form
    787.26/1,181.49 = 300.42/x
  3. Step 3: Cross multiply
    787.26x = 1,181.49 × 300.42
  4. Step 4: Simplify right side
    787.26x = 354,943.23
  5. Step 5: Solve for x
    x = 354,943.23/787.26
  6. Step 6: Final answer
    x = 450.86

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.