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Finding the Fourth Proportional to 369.89, 551.97 and 330.95

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Solution

The fourth proportional to 369.89, 551.97 and 330.95 is: 493.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.89 : 551.97 = 330.95 : x
  2. Step 2: Convert to fraction form
    369.89/551.97 = 330.95/x
  3. Step 3: Cross multiply
    369.89x = 551.97 × 330.95
  4. Step 4: Simplify right side
    369.89x = 182,674.47
  5. Step 5: Solve for x
    x = 182,674.47/369.89
  6. Step 6: Final answer
    x = 493.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.