Finding the Fourth Proportional to 511.79, 767.70 and 203.79
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Solution
The fourth proportional to 511.79, 767.70 and 203.79 is: 305.69
Step by Step Solution
- Step 1: Write the proportion equation
511.79 : 767.70 = 203.79 : x - Step 2: Convert to fraction form
511.79/767.70 = 203.79/x - Step 3: Cross multiply
511.79x = 767.70 × 203.79 - Step 4: Simplify right side
511.79x = 156,448.56 - Step 5: Solve for x
x = 156,448.56/511.79 - Step 6: Final answer
x = 305.69
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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.