Finding the Fourth Proportional to 84.08, 116.08 and 70.92
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Solution
The fourth proportional to 84.08, 116.08 and 70.92 is: 97.91
Step by Step Solution
- Step 1: Write the proportion equation
84.08 : 116.08 = 70.92 : x - Step 2: Convert to fraction form
84.08/116.08 = 70.92/x - Step 3: Cross multiply
84.08x = 116.08 × 70.92 - Step 4: Simplify right side
84.08x = 8,232.22 - Step 5: Solve for x
x = 8,232.22/84.08 - Step 6: Final answer
x = 97.91
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.