Finding the Fourth Proportional to 393.60, 542.99 and 236.14
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Solution
The fourth proportional to 393.60, 542.99 and 236.14 is: 325.77
Step by Step Solution
- Step 1: Write the proportion equation
393.60 : 542.99 = 236.14 : x - Step 2: Convert to fraction form
393.60/542.99 = 236.14/x - Step 3: Cross multiply
393.60x = 542.99 × 236.14 - Step 4: Simplify right side
393.60x = 128,221.66 - Step 5: Solve for x
x = 128,221.66/393.60 - Step 6: Final answer
x = 325.77
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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.