Finding the Fourth Proportional to 84.36, 125.66 and 83.99
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Solution
The fourth proportional to 84.36, 125.66 and 83.99 is: 125.11
Step by Step Solution
- Step 1: Write the proportion equation
84.36 : 125.66 = 83.99 : x - Step 2: Convert to fraction form
84.36/125.66 = 83.99/x - Step 3: Cross multiply
84.36x = 125.66 × 83.99 - Step 4: Simplify right side
84.36x = 10,554.18 - Step 5: Solve for x
x = 10,554.18/84.36 - Step 6: Final answer
x = 125.11
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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.