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Finding the Fourth Proportional to 326.03, 486.76 and 248.58

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Solution

The fourth proportional to 326.03, 486.76 and 248.58 is: 371.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.03 : 486.76 = 248.58 : x
  2. Step 2: Convert to fraction form
    326.03/486.76 = 248.58/x
  3. Step 3: Cross multiply
    326.03x = 486.76 × 248.58
  4. Step 4: Simplify right side
    326.03x = 120,997.56
  5. Step 5: Solve for x
    x = 120,997.56/326.03
  6. Step 6: Final answer
    x = 371.12

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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.