Finding the Fourth Proportional to 170.79, 255.99 and 84.18
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Solution
The fourth proportional to 170.79, 255.99 and 84.18 is: 126.17
Step by Step Solution
- Step 1: Write the proportion equation
170.79 : 255.99 = 84.18 : x - Step 2: Convert to fraction form
170.79/255.99 = 84.18/x - Step 3: Cross multiply
170.79x = 255.99 × 84.18 - Step 4: Simplify right side
170.79x = 21,549.24 - Step 5: Solve for x
x = 21,549.24/170.79 - Step 6: Final answer
x = 126.17
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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.