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Finding the Fourth Proportional to 583.05, 804.63 and 321.08

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Solution

The fourth proportional to 583.05, 804.63 and 321.08 is: 443.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.05 : 804.63 = 321.08 : x
  2. Step 2: Convert to fraction form
    583.05/804.63 = 321.08/x
  3. Step 3: Cross multiply
    583.05x = 804.63 × 321.08
  4. Step 4: Simplify right side
    583.05x = 258,346.58
  5. Step 5: Solve for x
    x = 258,346.58/583.05
  6. Step 6: Final answer
    x = 443.10

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