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Finding the Fourth Proportional to 323.16, 484.76 and 130.80

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Solution

The fourth proportional to 323.16, 484.76 and 130.80 is: 196.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.16 : 484.76 = 130.80 : x
  2. Step 2: Convert to fraction form
    323.16/484.76 = 130.80/x
  3. Step 3: Cross multiply
    323.16x = 484.76 × 130.80
  4. Step 4: Simplify right side
    323.16x = 63,406.61
  5. Step 5: Solve for x
    x = 63,406.61/323.16
  6. Step 6: Final answer
    x = 196.21

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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.