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Finding the Fourth Proportional to 321.30, 482.01 and 126.33

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Solution

The fourth proportional to 321.30, 482.01 and 126.33 is: 189.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    321.30 : 482.01 = 126.33 : x
  2. Step 2: Convert to fraction form
    321.30/482.01 = 126.33/x
  3. Step 3: Cross multiply
    321.30x = 482.01 × 126.33
  4. Step 4: Simplify right side
    321.30x = 60,892.32
  5. Step 5: Solve for x
    x = 60,892.32/321.30
  6. Step 6: Final answer
    x = 189.52

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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.