Finding the Fourth Proportional to 1,328.07, 1,831.37 and 930.09
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Solution
The fourth proportional to 1,328.07, 1,831.37 and 930.09 is: 1,282.56
Step by Step Solution
- Step 1: Write the proportion equation
1,328.07 : 1,831.37 = 930.09 : x - Step 2: Convert to fraction form
1,328.07/1,831.37 = 930.09/x - Step 3: Cross multiply
1,328.07x = 1,831.37 × 930.09 - Step 4: Simplify right side
1,328.07x = 1,703,334.27 - Step 5: Solve for x
x = 1,703,334.27/1,328.07 - Step 6: Final answer
x = 1,282.56
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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.