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Finding the Fourth Proportional to 523.79, 722.84 and 327.20

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Solution

The fourth proportional to 523.79, 722.84 and 327.20 is: 451.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.79 : 722.84 = 327.20 : x
  2. Step 2: Convert to fraction form
    523.79/722.84 = 327.20/x
  3. Step 3: Cross multiply
    523.79x = 722.84 × 327.20
  4. Step 4: Simplify right side
    523.79x = 236,508.00
  5. Step 5: Solve for x
    x = 236,508.00/523.79
  6. Step 6: Final answer
    x = 451.54

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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.