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Finding the Fourth Proportional to 436.73, 603.21 and 326.69

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Solution

The fourth proportional to 436.73, 603.21 and 326.69 is: 451.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.73 : 603.21 = 326.69 : x
  2. Step 2: Convert to fraction form
    436.73/603.21 = 326.69/x
  3. Step 3: Cross multiply
    436.73x = 603.21 × 326.69
  4. Step 4: Simplify right side
    436.73x = 197,062.67
  5. Step 5: Solve for x
    x = 197,062.67/436.73
  6. Step 6: Final answer
    x = 451.23

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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.