Finding the Fourth Proportional to 393.55, 543.53 and 268.99
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Solution
The fourth proportional to 393.55, 543.53 and 268.99 is: 371.50
Step by Step Solution
- Step 1: Write the proportion equation
393.55 : 543.53 = 268.99 : x - Step 2: Convert to fraction form
393.55/543.53 = 268.99/x - Step 3: Cross multiply
393.55x = 543.53 × 268.99 - Step 4: Simplify right side
393.55x = 146,204.13 - Step 5: Solve for x
x = 146,204.13/393.55 - Step 6: Final answer
x = 371.50
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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.