Finding the Fourth Proportional to 84.60, 115.99 and 83.06
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Solution
The fourth proportional to 84.60, 115.99 and 83.06 is: 113.88
Step by Step Solution
- Step 1: Write the proportion equation
84.60 : 115.99 = 83.06 : x - Step 2: Convert to fraction form
84.60/115.99 = 83.06/x - Step 3: Cross multiply
84.60x = 115.99 × 83.06 - Step 4: Simplify right side
84.60x = 9,634.13 - Step 5: Solve for x
x = 9,634.13/84.60 - Step 6: Final answer
x = 113.88
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.