Finding the Fourth Proportional to 351.98, 485.60 and 211.99
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Solution
The fourth proportional to 351.98, 485.60 and 211.99 is: 292.47
Step by Step Solution
- Step 1: Write the proportion equation
351.98 : 485.60 = 211.99 : x - Step 2: Convert to fraction form
351.98/485.60 = 211.99/x - Step 3: Cross multiply
351.98x = 485.60 × 211.99 - Step 4: Simplify right side
351.98x = 102,944.13 - Step 5: Solve for x
x = 102,944.13/351.98 - Step 6: Final answer
x = 292.47
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.