Finding the Fourth Proportional to 665.91, 998.99 and 203.68
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Solution
The fourth proportional to 665.91, 998.99 and 203.68 is: 305.55
Step by Step Solution
- Step 1: Write the proportion equation
665.91 : 998.99 = 203.68 : x - Step 2: Convert to fraction form
665.91/998.99 = 203.68/x - Step 3: Cross multiply
665.91x = 998.99 × 203.68 - Step 4: Simplify right side
665.91x = 203,470.77 - Step 5: Solve for x
x = 203,470.77/665.91 - Step 6: Final answer
x = 305.55
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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.