Finding the Fourth Proportional to 122.79, 184.26 and 68.70
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Solution
The fourth proportional to 122.79, 184.26 and 68.70 is: 103.09
Step by Step Solution
- Step 1: Write the proportion equation
122.79 : 184.26 = 68.70 : x - Step 2: Convert to fraction form
122.79/184.26 = 68.70/x - Step 3: Cross multiply
122.79x = 184.26 × 68.70 - Step 4: Simplify right side
122.79x = 12,658.66 - Step 5: Solve for x
x = 12,658.66/122.79 - Step 6: Final answer
x = 103.09
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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.