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Finding the Fourth Proportional to 1,787.00, 2,678.58 and 746.73

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Solution

The fourth proportional to 1,787.00, 2,678.58 and 746.73 is: 1,119.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.00 : 2,678.58 = 746.73 : x
  2. Step 2: Convert to fraction form
    1,787.00/2,678.58 = 746.73/x
  3. Step 3: Cross multiply
    1,787.00x = 2,678.58 × 746.73
  4. Step 4: Simplify right side
    1,787.00x = 2,000,176.04
  5. Step 5: Solve for x
    x = 2,000,176.04/1,787.00
  6. Step 6: Final answer
    x = 1,119.30

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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.