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Finding the Fourth Proportional to 1,976.30, 2,964.52 and 677.76

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Solution

The fourth proportional to 1,976.30, 2,964.52 and 677.76 is: 1,016.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.30 : 2,964.52 = 677.76 : x
  2. Step 2: Convert to fraction form
    1,976.30/2,964.52 = 677.76/x
  3. Step 3: Cross multiply
    1,976.30x = 2,964.52 × 677.76
  4. Step 4: Simplify right side
    1,976.30x = 2,009,233.08
  5. Step 5: Solve for x
    x = 2,009,233.08/1,976.30
  6. Step 6: Final answer
    x = 1,016.66

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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.