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Finding the Fourth Proportional to 722.56, 1,083.27 and 332.81

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Solution

The fourth proportional to 722.56, 1,083.27 and 332.81 is: 498.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.56 : 1,083.27 = 332.81 : x
  2. Step 2: Convert to fraction form
    722.56/1,083.27 = 332.81/x
  3. Step 3: Cross multiply
    722.56x = 1,083.27 × 332.81
  4. Step 4: Simplify right side
    722.56x = 360,523.09
  5. Step 5: Solve for x
    x = 360,523.09/722.56
  6. Step 6: Final answer
    x = 498.95

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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.