Finding the Fourth Proportional to 84.18, 125.94 and 49.94
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Solution
The fourth proportional to 84.18, 125.94 and 49.94 is: 74.71
Step by Step Solution
- Step 1: Write the proportion equation
84.18 : 125.94 = 49.94 : x - Step 2: Convert to fraction form
84.18/125.94 = 49.94/x - Step 3: Cross multiply
84.18x = 125.94 × 49.94 - Step 4: Simplify right side
84.18x = 6,289.44 - Step 5: Solve for x
x = 6,289.44/84.18 - Step 6: Final answer
x = 74.71
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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.