Finding the Fourth Proportional to 122.17, 182.95 and 70.70
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Solution
The fourth proportional to 122.17, 182.95 and 70.70 is: 105.88
Step by Step Solution
- Step 1: Write the proportion equation
122.17 : 182.95 = 70.70 : x - Step 2: Convert to fraction form
122.17/182.95 = 70.70/x - Step 3: Cross multiply
122.17x = 182.95 × 70.70 - Step 4: Simplify right side
122.17x = 12,934.57 - Step 5: Solve for x
x = 12,934.57/122.17 - Step 6: Final answer
x = 105.88
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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.