Finding the Fourth Proportional to 463.58, 639.62 and 276.99
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Solution
The fourth proportional to 463.58, 639.62 and 276.99 is: 382.17
Step by Step Solution
- Step 1: Write the proportion equation
463.58 : 639.62 = 276.99 : x - Step 2: Convert to fraction form
463.58/639.62 = 276.99/x - Step 3: Cross multiply
463.58x = 639.62 × 276.99 - Step 4: Simplify right side
463.58x = 177,169.04 - Step 5: Solve for x
x = 177,169.04/463.58 - Step 6: Final answer
x = 382.17
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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.