Finding the Fourth Proportional to 84.04, 126.08 and 53.68
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Solution
The fourth proportional to 84.04, 126.08 and 53.68 is: 80.53
Step by Step Solution
- Step 1: Write the proportion equation
84.04 : 126.08 = 53.68 : x - Step 2: Convert to fraction form
84.04/126.08 = 53.68/x - Step 3: Cross multiply
84.04x = 126.08 × 53.68 - Step 4: Simplify right side
84.04x = 6,767.97 - Step 5: Solve for x
x = 6,767.97/84.04 - Step 6: Final answer
x = 80.53
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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.