Finding the Fourth Proportional to 84.26, 116.26 and 55.13
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Solution
The fourth proportional to 84.26, 116.26 and 55.13 is: 76.07
Step by Step Solution
- Step 1: Write the proportion equation
84.26 : 116.26 = 55.13 : x - Step 2: Convert to fraction form
84.26/116.26 = 55.13/x - Step 3: Cross multiply
84.26x = 116.26 × 55.13 - Step 4: Simplify right side
84.26x = 6,409.41 - Step 5: Solve for x
x = 6,409.41/84.26 - Step 6: Final answer
x = 76.07
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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.