Finding the Fourth Proportional to 311.68, 429.99 and 201.14
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Solution
The fourth proportional to 311.68, 429.99 and 201.14 is: 277.49
Step by Step Solution
- Step 1: Write the proportion equation
311.68 : 429.99 = 201.14 : x - Step 2: Convert to fraction form
311.68/429.99 = 201.14/x - Step 3: Cross multiply
311.68x = 429.99 × 201.14 - Step 4: Simplify right side
311.68x = 86,488.19 - Step 5: Solve for x
x = 86,488.19/311.68 - Step 6: Final answer
x = 277.49
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.