Finding the Fourth Proportional to 149.79, 224.28 and 80.99
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Solution
The fourth proportional to 149.79, 224.28 and 80.99 is: 121.27
Step by Step Solution
- Step 1: Write the proportion equation
149.79 : 224.28 = 80.99 : x - Step 2: Convert to fraction form
149.79/224.28 = 80.99/x - Step 3: Cross multiply
149.79x = 224.28 × 80.99 - Step 4: Simplify right side
149.79x = 18,163.96 - Step 5: Solve for x
x = 18,163.96/149.79 - Step 6: Final answer
x = 121.27
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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.