Finding the Fourth Proportional to 177.77, 266.84 and 129.09
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Solution
The fourth proportional to 177.77, 266.84 and 129.09 is: 193.78
Step by Step Solution
- Step 1: Write the proportion equation
177.77 : 266.84 = 129.09 : x - Step 2: Convert to fraction form
177.77/266.84 = 129.09/x - Step 3: Cross multiply
177.77x = 266.84 × 129.09 - Step 4: Simplify right side
177.77x = 34,447.94 - Step 5: Solve for x
x = 34,447.94/177.77 - Step 6: Final answer
x = 193.78
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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.