Finding the Fourth Proportional to 449.99, 620.94 and 253.49
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Solution
The fourth proportional to 449.99, 620.94 and 253.49 is: 349.79
Step by Step Solution
- Step 1: Write the proportion equation
449.99 : 620.94 = 253.49 : x - Step 2: Convert to fraction form
449.99/620.94 = 253.49/x - Step 3: Cross multiply
449.99x = 620.94 × 253.49 - Step 4: Simplify right side
449.99x = 157,402.08 - Step 5: Solve for x
x = 157,402.08/449.99 - Step 6: Final answer
x = 349.79
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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.