Finding the Fourth Proportional to 80.99, 121.61 and 32.99
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Solution
The fourth proportional to 80.99, 121.61 and 32.99 is: 49.54
Step by Step Solution
- Step 1: Write the proportion equation
80.99 : 121.61 = 32.99 : x - Step 2: Convert to fraction form
80.99/121.61 = 32.99/x - Step 3: Cross multiply
80.99x = 121.61 × 32.99 - Step 4: Simplify right side
80.99x = 4,011.91 - Step 5: Solve for x
x = 4,011.91/80.99 - Step 6: Final answer
x = 49.54
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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.