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Finding the Fourth Proportional to 326.77, 489.67 and 164.25

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Solution

The fourth proportional to 326.77, 489.67 and 164.25 is: 246.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.77 : 489.67 = 164.25 : x
  2. Step 2: Convert to fraction form
    326.77/489.67 = 164.25/x
  3. Step 3: Cross multiply
    326.77x = 489.67 × 164.25
  4. Step 4: Simplify right side
    326.77x = 80,427.89
  5. Step 5: Solve for x
    x = 80,427.89/326.77
  6. Step 6: Final answer
    x = 246.13

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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.