Finding the Fourth Proportional to 84.53, 116.28 and 69.68
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Solution
The fourth proportional to 84.53, 116.28 and 69.68 is: 95.85
Step by Step Solution
- Step 1: Write the proportion equation
84.53 : 116.28 = 69.68 : x - Step 2: Convert to fraction form
84.53/116.28 = 69.68/x - Step 3: Cross multiply
84.53x = 116.28 × 69.68 - Step 4: Simplify right side
84.53x = 8,102.68 - Step 5: Solve for x
x = 8,102.68/84.53 - Step 6: Final answer
x = 95.85
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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.