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Finding the Fourth Proportional to 326.09, 488.84 and 130.93

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Solution

The fourth proportional to 326.09, 488.84 and 130.93 is: 196.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.09 : 488.84 = 130.93 : x
  2. Step 2: Convert to fraction form
    326.09/488.84 = 130.93/x
  3. Step 3: Cross multiply
    326.09x = 488.84 × 130.93
  4. Step 4: Simplify right side
    326.09x = 64,004.69
  5. Step 5: Solve for x
    x = 64,004.69/326.09
  6. Step 6: Final answer
    x = 196.28

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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.