Finding the Fourth Proportional to 415.19, 573.24 and 257.99
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Solution
The fourth proportional to 415.19, 573.24 and 257.99 is: 356.20
Step by Step Solution
- Step 1: Write the proportion equation
415.19 : 573.24 = 257.99 : x - Step 2: Convert to fraction form
415.19/573.24 = 257.99/x - Step 3: Cross multiply
415.19x = 573.24 × 257.99 - Step 4: Simplify right side
415.19x = 147,887.32 - Step 5: Solve for x
x = 147,887.32/415.19 - Step 6: Final answer
x = 356.20
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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.