Finding the Fourth Proportional to 84.19, 126.24 and 49.95
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Solution
The fourth proportional to 84.19, 126.24 and 49.95 is: 74.90
Step by Step Solution
- Step 1: Write the proportion equation
84.19 : 126.24 = 49.95 : x - Step 2: Convert to fraction form
84.19/126.24 = 49.95/x - Step 3: Cross multiply
84.19x = 126.24 × 49.95 - Step 4: Simplify right side
84.19x = 6,306.00 - Step 5: Solve for x
x = 6,306.00/84.19 - Step 6: Final answer
x = 74.90
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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.