Finding the Fourth Proportional to 137.54, 206.19 and 68.99
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Solution
The fourth proportional to 137.54, 206.19 and 68.99 is: 103.42
Step by Step Solution
- Step 1: Write the proportion equation
137.54 : 206.19 = 68.99 : x - Step 2: Convert to fraction form
137.54/206.19 = 68.99/x - Step 3: Cross multiply
137.54x = 206.19 × 68.99 - Step 4: Simplify right side
137.54x = 14,225.05 - Step 5: Solve for x
x = 14,225.05/137.54 - Step 6: Final answer
x = 103.42
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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.