Finding the Fourth Proportional to 345.99, 519.09 and 129.60
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Solution
The fourth proportional to 345.99, 519.09 and 129.60 is: 194.44
Step by Step Solution
- Step 1: Write the proportion equation
345.99 : 519.09 = 129.60 : x - Step 2: Convert to fraction form
345.99/519.09 = 129.60/x - Step 3: Cross multiply
345.99x = 519.09 × 129.60 - Step 4: Simplify right side
345.99x = 67,274.06 - Step 5: Solve for x
x = 67,274.06/345.99 - Step 6: Final answer
x = 194.44
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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.