Finding the Fourth Proportional to 349.13, 481.60 and 307.79
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Solution
The fourth proportional to 349.13, 481.60 and 307.79 is: 424.57
Step by Step Solution
- Step 1: Write the proportion equation
349.13 : 481.60 = 307.79 : x - Step 2: Convert to fraction form
349.13/481.60 = 307.79/x - Step 3: Cross multiply
349.13x = 481.60 × 307.79 - Step 4: Simplify right side
349.13x = 148,229.26 - Step 5: Solve for x
x = 148,229.26/349.13 - Step 6: Final answer
x = 424.57
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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.