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Finding the Fourth Proportional to 371.69, 555.88 and 330.85

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Solution

The fourth proportional to 371.69, 555.88 and 330.85 is: 494.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.69 : 555.88 = 330.85 : x
  2. Step 2: Convert to fraction form
    371.69/555.88 = 330.85/x
  3. Step 3: Cross multiply
    371.69x = 555.88 × 330.85
  4. Step 4: Simplify right side
    371.69x = 183,913.39
  5. Step 5: Solve for x
    x = 183,913.39/371.69
  6. Step 6: Final answer
    x = 494.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.