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Finding the Fourth Proportional to 326, 486.82 and 264.98

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Solution

The fourth proportional to 326, 486.82 and 264.98 is: 395.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    326 : 486.82 = 264.98 : x
  2. Step 2: Convert to fraction form
    326/486.82 = 264.98/x
  3. Step 3: Cross multiply
    326x = 486.82 × 264.98
  4. Step 4: Simplify right side
    326x = 128,997.56
  5. Step 5: Solve for x
    x = 128,997.56/326
  6. Step 6: Final answer
    x = 395.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.