Finding the Fourth Proportional to 84.36, 116.43 and 58.08
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Solution
The fourth proportional to 84.36, 116.43 and 58.08 is: 80.16
Step by Step Solution
- Step 1: Write the proportion equation
84.36 : 116.43 = 58.08 : x - Step 2: Convert to fraction form
84.36/116.43 = 58.08/x - Step 3: Cross multiply
84.36x = 116.43 × 58.08 - Step 4: Simplify right side
84.36x = 6,762.25 - Step 5: Solve for x
x = 6,762.25/84.36 - Step 6: Final answer
x = 80.16
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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.