Finding the Fourth Proportional to 114.15, 170.64 and 84.99
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Solution
The fourth proportional to 114.15, 170.64 and 84.99 is: 127.05
Step by Step Solution
- Step 1: Write the proportion equation
114.15 : 170.64 = 84.99 : x - Step 2: Convert to fraction form
114.15/170.64 = 84.99/x - Step 3: Cross multiply
114.15x = 170.64 × 84.99 - Step 4: Simplify right side
114.15x = 14,502.27 - Step 5: Solve for x
x = 14,502.27/114.15 - Step 6: Final answer
x = 127.05
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.