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Finding the Fourth Proportional to 677.00, 1,015.95 and 330.50

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Solution

The fourth proportional to 677.00, 1,015.95 and 330.50 is: 495.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.00 : 1,015.95 = 330.50 : x
  2. Step 2: Convert to fraction form
    677.00/1,015.95 = 330.50/x
  3. Step 3: Cross multiply
    677.00x = 1,015.95 × 330.50
  4. Step 4: Simplify right side
    677.00x = 335,766.40
  5. Step 5: Solve for x
    x = 335,766.40/677.00
  6. Step 6: Final answer
    x = 495.97

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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.