Finding the Fourth Proportional to 438.97, 657.43 and 347.05
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Solution
The fourth proportional to 438.97, 657.43 and 347.05 is: 519.76
Step by Step Solution
- Step 1: Write the proportion equation
438.97 : 657.43 = 347.05 : x - Step 2: Convert to fraction form
438.97/657.43 = 347.05/x - Step 3: Cross multiply
438.97x = 657.43 × 347.05 - Step 4: Simplify right side
438.97x = 228,161.08 - Step 5: Solve for x
x = 228,161.08/438.97 - Step 6: Final answer
x = 519.76
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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.