Home / 1,276.38-1,913.49-454.41

Finding the Fourth Proportional to 1,276.38, 1,913.49 and 454.41

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Solution

The fourth proportional to 1,276.38, 1,913.49 and 454.41 is: 681.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.38 : 1,913.49 = 454.41 : x
  2. Step 2: Convert to fraction form
    1,276.38/1,913.49 = 454.41/x
  3. Step 3: Cross multiply
    1,276.38x = 1,913.49 × 454.41
  4. Step 4: Simplify right side
    1,276.38x = 869,508.99
  5. Step 5: Solve for x
    x = 869,508.99/1,276.38
  6. Step 6: Final answer
    x = 681.23

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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.