Finding the Fourth Proportional to 631.97, 872.12 and 369.99
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Solution
The fourth proportional to 631.97, 872.12 and 369.99 is: 510.59
Step by Step Solution
- Step 1: Write the proportion equation
631.97 : 872.12 = 369.99 : x - Step 2: Convert to fraction form
631.97/872.12 = 369.99/x - Step 3: Cross multiply
631.97x = 872.12 × 369.99 - Step 4: Simplify right side
631.97x = 322,676.60 - Step 5: Solve for x
x = 322,676.60/631.97 - Step 6: Final answer
x = 510.59
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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.