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Finding the Fourth Proportional to 395.94, 546.06 and 330.36

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Solution

The fourth proportional to 395.94, 546.06 and 330.36 is: 455.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.94 : 546.06 = 330.36 : x
  2. Step 2: Convert to fraction form
    395.94/546.06 = 330.36/x
  3. Step 3: Cross multiply
    395.94x = 546.06 × 330.36
  4. Step 4: Simplify right side
    395.94x = 180,396.38
  5. Step 5: Solve for x
    x = 180,396.38/395.94
  6. Step 6: Final answer
    x = 455.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.