Finding the Fourth Proportional to 83.68, 125.29 and 77.99
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Solution
The fourth proportional to 83.68, 125.29 and 77.99 is: 116.77
Step by Step Solution
- Step 1: Write the proportion equation
83.68 : 125.29 = 77.99 : x - Step 2: Convert to fraction form
83.68/125.29 = 77.99/x - Step 3: Cross multiply
83.68x = 125.29 × 77.99 - Step 4: Simplify right side
83.68x = 9,771.37 - Step 5: Solve for x
x = 9,771.37/83.68 - Step 6: Final answer
x = 116.77
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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.