Home / 840.03-1,260.22-255.07

Finding the Fourth Proportional to 840.03, 1,260.22 and 255.07

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Solution

The fourth proportional to 840.03, 1,260.22 and 255.07 is: 382.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    840.03 : 1,260.22 = 255.07 : x
  2. Step 2: Convert to fraction form
    840.03/1,260.22 = 255.07/x
  3. Step 3: Cross multiply
    840.03x = 1,260.22 × 255.07
  4. Step 4: Simplify right side
    840.03x = 321,443.04
  5. Step 5: Solve for x
    x = 321,443.04/840.03
  6. Step 6: Final answer
    x = 382.66

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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.