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Finding the Fourth Proportional to 326.25, 489.03 and 245.46

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Solution

The fourth proportional to 326.25, 489.03 and 245.46 is: 367.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.25 : 489.03 = 245.46 : x
  2. Step 2: Convert to fraction form
    326.25/489.03 = 245.46/x
  3. Step 3: Cross multiply
    326.25x = 489.03 × 245.46
  4. Step 4: Simplify right side
    326.25x = 120,037.30
  5. Step 5: Solve for x
    x = 120,037.30/326.25
  6. Step 6: Final answer
    x = 367.93

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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.