Home / 1,031.00-1,422.97-611.60

Finding the Fourth Proportional to 1,031.00, 1,422.97 and 611.60

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Solution

The fourth proportional to 1,031.00, 1,422.97 and 611.60 is: 844.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031.00 : 1,422.97 = 611.60 : x
  2. Step 2: Convert to fraction form
    1,031.00/1,422.97 = 611.60/x
  3. Step 3: Cross multiply
    1,031.00x = 1,422.97 × 611.60
  4. Step 4: Simplify right side
    1,031.00x = 870,291.68
  5. Step 5: Solve for x
    x = 870,291.68/1,031.00
  6. Step 6: Final answer
    x = 844.12

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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.