Finding the Fourth Proportional to 762, 1,051.56 and 451.56
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Solution
The fourth proportional to 762, 1,051.56 and 451.56 is: 623.15
Step by Step Solution
- Step 1: Write the proportion equation
762 : 1,051.56 = 451.56 : x - Step 2: Convert to fraction form
762/1,051.56 = 451.56/x - Step 3: Cross multiply
762x = 1,051.56 × 451.56 - Step 4: Simplify right side
762x = 474,842.43 - Step 5: Solve for x
x = 474,842.43/762 - Step 6: Final answer
x = 623.15
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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.