Finding the Fourth Proportional to 122.45, 169.00 and 92.99
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Solution
The fourth proportional to 122.45, 169.00 and 92.99 is: 128.33
Step by Step Solution
- Step 1: Write the proportion equation
122.45 : 169.00 = 92.99 : x - Step 2: Convert to fraction form
122.45/169.00 = 92.99/x - Step 3: Cross multiply
122.45x = 169.00 × 92.99 - Step 4: Simplify right side
122.45x = 15,714.44 - Step 5: Solve for x
x = 15,714.44/122.45 - Step 6: Final answer
x = 128.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.