Finding the Fourth Proportional to 122.20, 176.95 and 122.20
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Solution
The fourth proportional to 122.20, 176.95 and 122.20 is: 176.95
Step by Step Solution
- Step 1: Write the proportion equation
122.20 : 176.95 = 122.20 : x - Step 2: Convert to fraction form
122.20/176.95 = 122.20/x - Step 3: Cross multiply
122.20x = 176.95 × 122.20 - Step 4: Simplify right side
122.20x = 21,623.29 - Step 5: Solve for x
x = 21,623.29/122.20 - Step 6: Final answer
x = 176.95
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Why These Related Problems?
These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.