Finding the Fourth Proportional to 122.70, 183.99 and 58.50
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Solution
The fourth proportional to 122.70, 183.99 and 58.50 is: 87.72
Step by Step Solution
- Step 1: Write the proportion equation
122.70 : 183.99 = 58.50 : x - Step 2: Convert to fraction form
122.70/183.99 = 58.50/x - Step 3: Cross multiply
122.70x = 183.99 × 58.50 - Step 4: Simplify right side
122.70x = 10,763.42 - Step 5: Solve for x
x = 10,763.42/122.70 - Step 6: Final answer
x = 87.72
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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.