Finding the Fourth Proportional to 84.58, 126.87 and 43.99
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Solution
The fourth proportional to 84.58, 126.87 and 43.99 is: 65.99
Step by Step Solution
- Step 1: Write the proportion equation
84.58 : 126.87 = 43.99 : x - Step 2: Convert to fraction form
84.58/126.87 = 43.99/x - Step 3: Cross multiply
84.58x = 126.87 × 43.99 - Step 4: Simplify right side
84.58x = 5,581.01 - Step 5: Solve for x
x = 5,581.01/84.58 - Step 6: Final answer
x = 65.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.