Finding the Fourth Proportional to 455.70, 628.99 and 414.19
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Solution
The fourth proportional to 455.70, 628.99 and 414.19 is: 571.69
Step by Step Solution
- Step 1: Write the proportion equation
455.70 : 628.99 = 414.19 : x - Step 2: Convert to fraction form
455.70/628.99 = 414.19/x - Step 3: Cross multiply
455.70x = 628.99 × 414.19 - Step 4: Simplify right side
455.70x = 260,521.37 - Step 5: Solve for x
x = 260,521.37/455.70 - Step 6: Final answer
x = 571.69
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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.