Finding the Fourth Proportional to 289.06, 398.93 and 239.26
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Solution
The fourth proportional to 289.06, 398.93 and 239.26 is: 330.20
Step by Step Solution
- Step 1: Write the proportion equation
289.06 : 398.93 = 239.26 : x - Step 2: Convert to fraction form
289.06/398.93 = 239.26/x - Step 3: Cross multiply
289.06x = 398.93 × 239.26 - Step 4: Simplify right side
289.06x = 95,447.99 - Step 5: Solve for x
x = 95,447.99/289.06 - Step 6: Final answer
x = 330.20
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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.