Finding the Fourth Proportional to 76.68, 114.99 and 40.08
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Solution
The fourth proportional to 76.68, 114.99 and 40.08 is: 60.11
Step by Step Solution
- Step 1: Write the proportion equation
76.68 : 114.99 = 40.08 : x - Step 2: Convert to fraction form
76.68/114.99 = 40.08/x - Step 3: Cross multiply
76.68x = 114.99 × 40.08 - Step 4: Simplify right side
76.68x = 4,609.08 - Step 5: Solve for x
x = 4,609.08/76.68 - Step 6: Final answer
x = 60.11
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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.