Finding the Fourth Proportional to 457.26, 631.09 and 374.20
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Solution
The fourth proportional to 457.26, 631.09 and 374.20 is: 516.45
Step by Step Solution
- Step 1: Write the proportion equation
457.26 : 631.09 = 374.20 : x - Step 2: Convert to fraction form
457.26/631.09 = 374.20/x - Step 3: Cross multiply
457.26x = 631.09 × 374.20 - Step 4: Simplify right side
457.26x = 236,153.88 - Step 5: Solve for x
x = 236,153.88/457.26 - Step 6: Final answer
x = 516.45
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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.