Finding the Fourth Proportional to 301.44, 415.08 and 257.68
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Solution
The fourth proportional to 301.44, 415.08 and 257.68 is: 354.82
Step by Step Solution
- Step 1: Write the proportion equation
301.44 : 415.08 = 257.68 : x - Step 2: Convert to fraction form
301.44/415.08 = 257.68/x - Step 3: Cross multiply
301.44x = 415.08 × 257.68 - Step 4: Simplify right side
301.44x = 106,957.81 - Step 5: Solve for x
x = 106,957.81/301.44 - Step 6: Final answer
x = 354.82
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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.