Finding the Fourth Proportional to 107.11, 161.07 and 104.68
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Solution
The fourth proportional to 107.11, 161.07 and 104.68 is: 157.42
Step by Step Solution
- Step 1: Write the proportion equation
107.11 : 161.07 = 104.68 : x - Step 2: Convert to fraction form
107.11/161.07 = 104.68/x - Step 3: Cross multiply
107.11x = 161.07 × 104.68 - Step 4: Simplify right side
107.11x = 16,860.81 - Step 5: Solve for x
x = 16,860.81/107.11 - Step 6: Final answer
x = 157.42
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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.