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Finding the Fourth Proportional to 330.41, 494.45 and 243.54

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Solution

The fourth proportional to 330.41, 494.45 and 243.54 is: 364.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.41 : 494.45 = 243.54 : x
  2. Step 2: Convert to fraction form
    330.41/494.45 = 243.54/x
  3. Step 3: Cross multiply
    330.41x = 494.45 × 243.54
  4. Step 4: Simplify right side
    330.41x = 120,417.14
  5. Step 5: Solve for x
    x = 120,417.14/330.41
  6. Step 6: Final answer
    x = 364.45

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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.