Finding the Fourth Proportional to 450.63, 621.99 and 276.12
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Solution
The fourth proportional to 450.63, 621.99 and 276.12 is: 381.12
Step by Step Solution
- Step 1: Write the proportion equation
450.63 : 621.99 = 276.12 : x - Step 2: Convert to fraction form
450.63/621.99 = 276.12/x - Step 3: Cross multiply
450.63x = 621.99 × 276.12 - Step 4: Simplify right side
450.63x = 171,743.88 - Step 5: Solve for x
x = 171,743.88/450.63 - Step 6: Final answer
x = 381.12
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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.