Home / 1,276.98-1,914.61-443.83

Finding the Fourth Proportional to 1,276.98, 1,914.61 and 443.83

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Solution

The fourth proportional to 1,276.98, 1,914.61 and 443.83 is: 665.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.98 : 1,914.61 = 443.83 : x
  2. Step 2: Convert to fraction form
    1,276.98/1,914.61 = 443.83/x
  3. Step 3: Cross multiply
    1,276.98x = 1,914.61 × 443.83
  4. Step 4: Simplify right side
    1,276.98x = 849,761.36
  5. Step 5: Solve for x
    x = 849,761.36/1,276.98
  6. Step 6: Final answer
    x = 665.45

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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.