Finding the Fourth Proportional to 311.97, 430.26 and 265.47
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Solution
The fourth proportional to 311.97, 430.26 and 265.47 is: 366.13
Step by Step Solution
- Step 1: Write the proportion equation
311.97 : 430.26 = 265.47 : x - Step 2: Convert to fraction form
311.97/430.26 = 265.47/x - Step 3: Cross multiply
311.97x = 430.26 × 265.47 - Step 4: Simplify right side
311.97x = 114,221.12 - Step 5: Solve for x
x = 114,221.12/311.97 - Step 6: Final answer
x = 366.13
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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.