Finding the Fourth Proportional to 177.77, 266.69 and 74.99
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Solution
The fourth proportional to 177.77, 266.69 and 74.99 is: 112.49
Step by Step Solution
- Step 1: Write the proportion equation
177.77 : 266.69 = 74.99 : x - Step 2: Convert to fraction form
177.77/266.69 = 74.99/x - Step 3: Cross multiply
177.77x = 266.69 × 74.99 - Step 4: Simplify right side
177.77x = 19,997.37 - Step 5: Solve for x
x = 19,997.37/177.77 - Step 6: Final answer
x = 112.49
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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.