Finding the Fourth Proportional to 831.70, 1,246.95 and 344.62
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Solution
The fourth proportional to 831.70, 1,246.95 and 344.62 is: 516.68
Step by Step Solution
- Step 1: Write the proportion equation
831.70 : 1,246.95 = 344.62 : x - Step 2: Convert to fraction form
831.70/1,246.95 = 344.62/x - Step 3: Cross multiply
831.70x = 1,246.95 × 344.62 - Step 4: Simplify right side
831.70x = 429,723.91 - Step 5: Solve for x
x = 429,723.91/831.70 - Step 6: Final answer
x = 516.68
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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.