Finding the Fourth Proportional to 190.81, 286.26 and 69.08
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Solution
The fourth proportional to 190.81, 286.26 and 69.08 is: 103.64
Step by Step Solution
- Step 1: Write the proportion equation
190.81 : 286.26 = 69.08 : x - Step 2: Convert to fraction form
190.81/286.26 = 69.08/x - Step 3: Cross multiply
190.81x = 286.26 × 69.08 - Step 4: Simplify right side
190.81x = 19,774.84 - Step 5: Solve for x
x = 19,774.84/190.81 - Step 6: Final answer
x = 103.64
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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.