Finding the Fourth Proportional to 831.21, 1,246.74 and 460.99
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Solution
The fourth proportional to 831.21, 1,246.74 and 460.99 is: 691.44
Step by Step Solution
- Step 1: Write the proportion equation
831.21 : 1,246.74 = 460.99 : x - Step 2: Convert to fraction form
831.21/1,246.74 = 460.99/x - Step 3: Cross multiply
831.21x = 1,246.74 × 460.99 - Step 4: Simplify right side
831.21x = 574,737.10 - Step 5: Solve for x
x = 574,737.10/831.21 - Step 6: Final answer
x = 691.44
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.