Finding the Fourth Proportional to 80.67, 120.54 and 49.99
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Solution
The fourth proportional to 80.67, 120.54 and 49.99 is: 74.70
Step by Step Solution
- Step 1: Write the proportion equation
80.67 : 120.54 = 49.99 : x - Step 2: Convert to fraction form
80.67/120.54 = 49.99/x - Step 3: Cross multiply
80.67x = 120.54 × 49.99 - Step 4: Simplify right side
80.67x = 6,025.79 - Step 5: Solve for x
x = 6,025.79/80.67 - Step 6: Final answer
x = 74.70
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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.