Home / 1,277.38-1,914.99-455.41

Finding the Fourth Proportional to 1,277.38, 1,914.99 and 455.41

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Solution

The fourth proportional to 1,277.38, 1,914.99 and 455.41 is: 682.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.38 : 1,914.99 = 455.41 : x
  2. Step 2: Convert to fraction form
    1,277.38/1,914.99 = 455.41/x
  3. Step 3: Cross multiply
    1,277.38x = 1,914.99 × 455.41
  4. Step 4: Simplify right side
    1,277.38x = 872,105.60
  5. Step 5: Solve for x
    x = 872,105.60/1,277.38
  6. Step 6: Final answer
    x = 682.73

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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.