Finding the Fourth Proportional to 343.94, 474.08 and 315.68
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Solution
The fourth proportional to 343.94, 474.08 and 315.68 is: 435.12
Step by Step Solution
- Step 1: Write the proportion equation
343.94 : 474.08 = 315.68 : x - Step 2: Convert to fraction form
343.94/474.08 = 315.68/x - Step 3: Cross multiply
343.94x = 474.08 × 315.68 - Step 4: Simplify right side
343.94x = 149,653.63 - Step 5: Solve for x
x = 149,653.63/343.94 - Step 6: Final answer
x = 435.12
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.