Finding the Fourth Proportional to 438.63, 657.95 and 425.26
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Solution
The fourth proportional to 438.63, 657.95 and 425.26 is: 637.90
Step by Step Solution
- Step 1: Write the proportion equation
438.63 : 657.95 = 425.26 : x - Step 2: Convert to fraction form
438.63/657.95 = 425.26/x - Step 3: Cross multiply
438.63x = 657.95 × 425.26 - Step 4: Simplify right side
438.63x = 279,798.51 - Step 5: Solve for x
x = 279,798.51/438.63 - Step 6: Final answer
x = 637.90
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.