Home / 1,276.29-1,914.19-454.56

Finding the Fourth Proportional to 1,276.29, 1,914.19 and 454.56

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Solution

The fourth proportional to 1,276.29, 1,914.19 and 454.56 is: 681.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.29 : 1,914.19 = 454.56 : x
  2. Step 2: Convert to fraction form
    1,276.29/1,914.19 = 454.56/x
  3. Step 3: Cross multiply
    1,276.29x = 1,914.19 × 454.56
  4. Step 4: Simplify right side
    1,276.29x = 870,114.21
  5. Step 5: Solve for x
    x = 870,114.21/1,276.29
  6. Step 6: Final answer
    x = 681.75

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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.