Home / 1,276.30-1,914.09-454.62

Finding the Fourth Proportional to 1,276.30, 1,914.09 and 454.62

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Solution

The fourth proportional to 1,276.30, 1,914.09 and 454.62 is: 681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.30 : 1,914.09 = 454.62 : x
  2. Step 2: Convert to fraction form
    1,276.30/1,914.09 = 454.62/x
  3. Step 3: Cross multiply
    1,276.30x = 1,914.09 × 454.62
  4. Step 4: Simplify right side
    1,276.30x = 870,183.60
  5. Step 5: Solve for x
    x = 870,183.60/1,276.30
  6. Step 6: Final answer
    x = 681.80

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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.