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Finding the Fourth Proportional to 583.82, 875.32 and 218.56

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Solution

The fourth proportional to 583.82, 875.32 and 218.56 is: 327.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.82 : 875.32 = 218.56 : x
  2. Step 2: Convert to fraction form
    583.82/875.32 = 218.56/x
  3. Step 3: Cross multiply
    583.82x = 875.32 × 218.56
  4. Step 4: Simplify right side
    583.82x = 191,309.94
  5. Step 5: Solve for x
    x = 191,309.94/583.82
  6. Step 6: Final answer
    x = 327.69

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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.