Finding the Fourth Proportional to 351.12, 484.78 and 226.99
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Solution
The fourth proportional to 351.12, 484.78 and 226.99 is: 313.40
Step by Step Solution
- Step 1: Write the proportion equation
351.12 : 484.78 = 226.99 : x - Step 2: Convert to fraction form
351.12/484.78 = 226.99/x - Step 3: Cross multiply
351.12x = 484.78 × 226.99 - Step 4: Simplify right side
351.12x = 110,040.21 - Step 5: Solve for x
x = 110,040.21/351.12 - Step 6: Final answer
x = 313.40
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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.