Finding the Fourth Proportional to 455.99, 628.97 and 290.21
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Solution
The fourth proportional to 455.99, 628.97 and 290.21 is: 400.30
Step by Step Solution
- Step 1: Write the proportion equation
455.99 : 628.97 = 290.21 : x - Step 2: Convert to fraction form
455.99/628.97 = 290.21/x - Step 3: Cross multiply
455.99x = 628.97 × 290.21 - Step 4: Simplify right side
455.99x = 182,528.79 - Step 5: Solve for x
x = 182,528.79/455.99 - Step 6: Final answer
x = 400.30
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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.