Finding the Fourth Proportional to 557.08, 768.67 and 451.99
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Solution
The fourth proportional to 557.08, 768.67 and 451.99 is: 623.66
Step by Step Solution
- Step 1: Write the proportion equation
557.08 : 768.67 = 451.99 : x - Step 2: Convert to fraction form
557.08/768.67 = 451.99/x - Step 3: Cross multiply
557.08x = 768.67 × 451.99 - Step 4: Simplify right side
557.08x = 347,425.05 - Step 5: Solve for x
x = 347,425.05/557.08 - Step 6: Final answer
x = 623.66
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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.