Finding the Fourth Proportional to 727.25, 1,004.08 and 478.99
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Solution
The fourth proportional to 727.25, 1,004.08 and 478.99 is: 661.32
Step by Step Solution
- Step 1: Write the proportion equation
727.25 : 1,004.08 = 478.99 : x - Step 2: Convert to fraction form
727.25/1,004.08 = 478.99/x - Step 3: Cross multiply
727.25x = 1,004.08 × 478.99 - Step 4: Simplify right side
727.25x = 480,950.79 - Step 5: Solve for x
x = 480,950.79/727.25 - Step 6: Final answer
x = 661.32
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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.