Finding the Fourth Proportional to 266.62, 399.78 and 122.26
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Solution
The fourth proportional to 266.62, 399.78 and 122.26 is: 183.32
Step by Step Solution
- Step 1: Write the proportion equation
266.62 : 399.78 = 122.26 : x - Step 2: Convert to fraction form
266.62/399.78 = 122.26/x - Step 3: Cross multiply
266.62x = 399.78 × 122.26 - Step 4: Simplify right side
266.62x = 48,877.10 - Step 5: Solve for x
x = 48,877.10/266.62 - Step 6: Final answer
x = 183.32
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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.