Finding the Fourth Proportional to 311.55, 430.08 and 201.03
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Solution
The fourth proportional to 311.55, 430.08 and 201.03 is: 277.51
Step by Step Solution
- Step 1: Write the proportion equation
311.55 : 430.08 = 201.03 : x - Step 2: Convert to fraction form
311.55/430.08 = 201.03/x - Step 3: Cross multiply
311.55x = 430.08 × 201.03 - Step 4: Simplify right side
311.55x = 86,458.98 - Step 5: Solve for x
x = 86,458.98/311.55 - Step 6: Final answer
x = 277.51
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.