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Finding the Fourth Proportional to 321.60, 482.31 and 204.41

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Solution

The fourth proportional to 321.60, 482.31 and 204.41 is: 306.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    321.60 : 482.31 = 204.41 : x
  2. Step 2: Convert to fraction form
    321.60/482.31 = 204.41/x
  3. Step 3: Cross multiply
    321.60x = 482.31 × 204.41
  4. Step 4: Simplify right side
    321.60x = 98,586.58
  5. Step 5: Solve for x
    x = 98,586.58/321.60
  6. Step 6: Final answer
    x = 306.55

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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.