Finding the Fourth Proportional to 392.70, 541.79 and 226.95
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Solution
The fourth proportional to 392.70, 541.79 and 226.95 is: 313.12
Step by Step Solution
- Step 1: Write the proportion equation
392.70 : 541.79 = 226.95 : x - Step 2: Convert to fraction form
392.70/541.79 = 226.95/x - Step 3: Cross multiply
392.70x = 541.79 × 226.95 - Step 4: Simplify right side
392.70x = 122,959.97 - Step 5: Solve for x
x = 122,959.97/392.70 - Step 6: Final answer
x = 313.12
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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.