Finding the Fourth Proportional to 177.25, 266.08 and 81.07
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Solution
The fourth proportional to 177.25, 266.08 and 81.07 is: 121.70
Step by Step Solution
- Step 1: Write the proportion equation
177.25 : 266.08 = 81.07 : x - Step 2: Convert to fraction form
177.25/266.08 = 81.07/x - Step 3: Cross multiply
177.25x = 266.08 × 81.07 - Step 4: Simplify right side
177.25x = 21,571.11 - Step 5: Solve for x
x = 21,571.11/177.25 - Step 6: Final answer
x = 121.70
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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.