Finding the Fourth Proportional to 190.98, 286.36 and 69.19
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Solution
The fourth proportional to 190.98, 286.36 and 69.19 is: 103.74
Step by Step Solution
- Step 1: Write the proportion equation
190.98 : 286.36 = 69.19 : x - Step 2: Convert to fraction form
190.98/286.36 = 69.19/x - Step 3: Cross multiply
190.98x = 286.36 × 69.19 - Step 4: Simplify right side
190.98x = 19,812.36 - Step 5: Solve for x
x = 19,812.36/190.98 - Step 6: Final answer
x = 103.74
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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.