Finding the Fourth Proportional to 831.84, 1,248 and 284.08
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Solution
The fourth proportional to 831.84, 1,248 and 284.08 is: 426.20
Step by Step Solution
- Step 1: Write the proportion equation
831.84 : 1,248 = 284.08 : x - Step 2: Convert to fraction form
831.84/1,248 = 284.08/x - Step 3: Cross multiply
831.84x = 1,248 × 284.08 - Step 4: Simplify right side
831.84x = 354,531.84 - Step 5: Solve for x
x = 354,531.84/831.84 - Step 6: Final answer
x = 426.20
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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.