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Finding the Fourth Proportional to 384.49, 576.33 and 330.22

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Solution

The fourth proportional to 384.49, 576.33 and 330.22 is: 494.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.49 : 576.33 = 330.22 : x
  2. Step 2: Convert to fraction form
    384.49/576.33 = 330.22/x
  3. Step 3: Cross multiply
    384.49x = 576.33 × 330.22
  4. Step 4: Simplify right side
    384.49x = 190,315.69
  5. Step 5: Solve for x
    x = 190,315.69/384.49
  6. Step 6: Final answer
    x = 494.98

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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.