Home / 1,034.20-1,426.98-640.99

Finding the Fourth Proportional to 1,034.20, 1,426.98 and 640.99

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Solution

The fourth proportional to 1,034.20, 1,426.98 and 640.99 is: 884.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,034.20 : 1,426.98 = 640.99 : x
  2. Step 2: Convert to fraction form
    1,034.20/1,426.98 = 640.99/x
  3. Step 3: Cross multiply
    1,034.20x = 1,426.98 × 640.99
  4. Step 4: Simplify right side
    1,034.20x = 914,679.91
  5. Step 5: Solve for x
    x = 914,679.91/1,034.20
  6. Step 6: Final answer
    x = 884.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.