Finding the Fourth Proportional to 403.76, 557.19 and 226.74
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Solution
The fourth proportional to 403.76, 557.19 and 226.74 is: 312.90
Step by Step Solution
- Step 1: Write the proportion equation
403.76 : 557.19 = 226.74 : x - Step 2: Convert to fraction form
403.76/557.19 = 226.74/x - Step 3: Cross multiply
403.76x = 557.19 × 226.74 - Step 4: Simplify right side
403.76x = 126,337.26 - Step 5: Solve for x
x = 126,337.26/403.76 - Step 6: Final answer
x = 312.90
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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.