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Finding the Fourth Proportional to 677.00, 1,015.83 and 311.73

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Solution

The fourth proportional to 677.00, 1,015.83 and 311.73 is: 467.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.00 : 1,015.83 = 311.73 : x
  2. Step 2: Convert to fraction form
    677.00/1,015.83 = 311.73/x
  3. Step 3: Cross multiply
    677.00x = 1,015.83 × 311.73
  4. Step 4: Simplify right side
    677.00x = 316,664.69
  5. Step 5: Solve for x
    x = 316,664.69/677.00
  6. Step 6: Final answer
    x = 467.75

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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.