Finding the Fourth Proportional to 392.11, 540.98 and 226.26
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Solution
The fourth proportional to 392.11, 540.98 and 226.26 is: 312.16
Step by Step Solution
- Step 1: Write the proportion equation
392.11 : 540.98 = 226.26 : x - Step 2: Convert to fraction form
392.11/540.98 = 226.26/x - Step 3: Cross multiply
392.11x = 540.98 × 226.26 - Step 4: Simplify right side
392.11x = 122,402.13 - Step 5: Solve for x
x = 122,402.13/392.11 - Step 6: Final answer
x = 312.16
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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.