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Finding the Fourth Proportional to 299.89, 414.06 and 187.91

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Solution

The fourth proportional to 299.89, 414.06 and 187.91 is: 259.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.89 : 414.06 = 187.91 : x
  2. Step 2: Convert to fraction form
    299.89/414.06 = 187.91/x
  3. Step 3: Cross multiply
    299.89x = 414.06 × 187.91
  4. Step 4: Simplify right side
    299.89x = 77,804.47
  5. Step 5: Solve for x
    x = 77,804.47/299.89
  6. Step 6: Final answer
    x = 259.44

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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.