Finding the Fourth Proportional to 84.07, 125.46 and 74.44
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Solution
The fourth proportional to 84.07, 125.46 and 74.44 is: 111.08
Step by Step Solution
- Step 1: Write the proportion equation
84.07 : 125.46 = 74.44 : x - Step 2: Convert to fraction form
84.07/125.46 = 74.44/x - Step 3: Cross multiply
84.07x = 125.46 × 74.44 - Step 4: Simplify right side
84.07x = 9,338.24 - Step 5: Solve for x
x = 9,338.24/84.07 - Step 6: Final answer
x = 111.08
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.