Finding the Fourth Proportional to 673.74, 929.69 and 378.99
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Solution
The fourth proportional to 673.74, 929.69 and 378.99 is: 522.96
Step by Step Solution
- Step 1: Write the proportion equation
673.74 : 929.69 = 378.99 : x - Step 2: Convert to fraction form
673.74/929.69 = 378.99/x - Step 3: Cross multiply
673.74x = 929.69 × 378.99 - Step 4: Simplify right side
673.74x = 352,336.67 - Step 5: Solve for x
x = 352,336.67/673.74 - Step 6: Final answer
x = 522.96
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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.