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Finding the Fourth Proportional to 194.99, 290.16 and 188.38

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Solution

The fourth proportional to 194.99, 290.16 and 188.38 is: 280.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.99 : 290.16 = 188.38 : x
  2. Step 2: Convert to fraction form
    194.99/290.16 = 188.38/x
  3. Step 3: Cross multiply
    194.99x = 290.16 × 188.38
  4. Step 4: Simplify right side
    194.99x = 54,660.34
  5. Step 5: Solve for x
    x = 54,660.34/194.99
  6. Step 6: Final answer
    x = 280.32

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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.