Finding the Fourth Proportional to 258.43, 356.25 and 202.99
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Solution
The fourth proportional to 258.43, 356.25 and 202.99 is: 279.83
Step by Step Solution
- Step 1: Write the proportion equation
258.43 : 356.25 = 202.99 : x - Step 2: Convert to fraction form
258.43/356.25 = 202.99/x - Step 3: Cross multiply
258.43x = 356.25 × 202.99 - Step 4: Simplify right side
258.43x = 72,315.19 - Step 5: Solve for x
x = 72,315.19/258.43 - Step 6: Final answer
x = 279.83
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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.