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Finding the Fourth Proportional to 525.69, 725.79 and 326.73

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Solution

The fourth proportional to 525.69, 725.79 and 326.73 is: 451.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.69 : 725.79 = 326.73 : x
  2. Step 2: Convert to fraction form
    525.69/725.79 = 326.73/x
  3. Step 3: Cross multiply
    525.69x = 725.79 × 326.73
  4. Step 4: Simplify right side
    525.69x = 237,137.37
  5. Step 5: Solve for x
    x = 237,137.37/525.69
  6. Step 6: Final answer
    x = 451.10

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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.