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Finding the Fourth Proportional to 583.22, 804.84 and 321.23

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Solution

The fourth proportional to 583.22, 804.84 and 321.23 is: 443.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.22 : 804.84 = 321.23 : x
  2. Step 2: Convert to fraction form
    583.22/804.84 = 321.23/x
  3. Step 3: Cross multiply
    583.22x = 804.84 × 321.23
  4. Step 4: Simplify right side
    583.22x = 258,538.75
  5. Step 5: Solve for x
    x = 258,538.75/583.22
  6. Step 6: Final answer
    x = 443.30

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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.