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Finding the Fourth Proportional to 583.36, 804.96 and 321.39

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Solution

The fourth proportional to 583.36, 804.96 and 321.39 is: 443.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.36 : 804.96 = 321.39 : x
  2. Step 2: Convert to fraction form
    583.36/804.96 = 321.39/x
  3. Step 3: Cross multiply
    583.36x = 804.96 × 321.39
  4. Step 4: Simplify right side
    583.36x = 258,706.09
  5. Step 5: Solve for x
    x = 258,706.09/583.36
  6. Step 6: Final answer
    x = 443.48

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1.5x scale

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.