Finding the Fourth Proportional to 84.08, 126.10 and 55.19
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Solution
The fourth proportional to 84.08, 126.10 and 55.19 is: 82.77
Step by Step Solution
- Step 1: Write the proportion equation
84.08 : 126.10 = 55.19 : x - Step 2: Convert to fraction form
84.08/126.10 = 55.19/x - Step 3: Cross multiply
84.08x = 126.10 × 55.19 - Step 4: Simplify right side
84.08x = 6,959.18 - Step 5: Solve for x
x = 6,959.18/84.08 - Step 6: Final answer
x = 82.77
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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.