Finding the Fourth Proportional to 403.44, 557.08 and 272.88
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Solution
The fourth proportional to 403.44, 557.08 and 272.88 is: 376.80
Step by Step Solution
- Step 1: Write the proportion equation
403.44 : 557.08 = 272.88 : x - Step 2: Convert to fraction form
403.44/557.08 = 272.88/x - Step 3: Cross multiply
403.44x = 557.08 × 272.88 - Step 4: Simplify right side
403.44x = 152,015.99 - Step 5: Solve for x
x = 152,015.99/403.44 - Step 6: Final answer
x = 376.80
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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.