Finding the Fourth Proportional to 455.49, 628.53 and 258.99
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Solution
The fourth proportional to 455.49, 628.53 and 258.99 is: 357.38
Step by Step Solution
- Step 1: Write the proportion equation
455.49 : 628.53 = 258.99 : x - Step 2: Convert to fraction form
455.49/628.53 = 258.99/x - Step 3: Cross multiply
455.49x = 628.53 × 258.99 - Step 4: Simplify right side
455.49x = 162,782.98 - Step 5: Solve for x
x = 162,782.98/455.49 - Step 6: Final answer
x = 357.38
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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.