Finding the Fourth Proportional to 177.74, 266.40 and 80.31
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Solution
The fourth proportional to 177.74, 266.40 and 80.31 is: 120.37
Step by Step Solution
- Step 1: Write the proportion equation
177.74 : 266.40 = 80.31 : x - Step 2: Convert to fraction form
177.74/266.40 = 80.31/x - Step 3: Cross multiply
177.74x = 266.40 × 80.31 - Step 4: Simplify right side
177.74x = 21,394.58 - Step 5: Solve for x
x = 21,394.58/177.74 - Step 6: Final answer
x = 120.37
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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.