Finding the Fourth Proportional to 84.03, 115.91 and 58.11
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Solution
The fourth proportional to 84.03, 115.91 and 58.11 is: 80.15
Step by Step Solution
- Step 1: Write the proportion equation
84.03 : 115.91 = 58.11 : x - Step 2: Convert to fraction form
84.03/115.91 = 58.11/x - Step 3: Cross multiply
84.03x = 115.91 × 58.11 - Step 4: Simplify right side
84.03x = 6,735.24 - Step 5: Solve for x
x = 6,735.24/84.03 - Step 6: Final answer
x = 80.15
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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.