Finding the Fourth Proportional to 449.94, 621.05 and 318.99
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Solution
The fourth proportional to 449.94, 621.05 and 318.99 is: 440.30
Step by Step Solution
- Step 1: Write the proportion equation
449.94 : 621.05 = 318.99 : x - Step 2: Convert to fraction form
449.94/621.05 = 318.99/x - Step 3: Cross multiply
449.94x = 621.05 × 318.99 - Step 4: Simplify right side
449.94x = 198,107.14 - Step 5: Solve for x
x = 198,107.14/449.94 - Step 6: Final answer
x = 440.30
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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.