Finding the Fourth Proportional to 306.36, 458.49 and 257.66
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Solution
The fourth proportional to 306.36, 458.49 and 257.66 is: 385.60
Step by Step Solution
- Step 1: Write the proportion equation
306.36 : 458.49 = 257.66 : x - Step 2: Convert to fraction form
306.36/458.49 = 257.66/x - Step 3: Cross multiply
306.36x = 458.49 × 257.66 - Step 4: Simplify right side
306.36x = 118,132.24 - Step 5: Solve for x
x = 118,132.24/306.36 - Step 6: Final answer
x = 385.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.