Finding the Fourth Proportional to 397.68, 594.99 and 215.21
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Solution
The fourth proportional to 397.68, 594.99 and 215.21 is: 321.98
Step by Step Solution
- Step 1: Write the proportion equation
397.68 : 594.99 = 215.21 : x - Step 2: Convert to fraction form
397.68/594.99 = 215.21/x - Step 3: Cross multiply
397.68x = 594.99 × 215.21 - Step 4: Simplify right side
397.68x = 128,044.82 - Step 5: Solve for x
x = 128,044.82/397.68 - Step 6: Final answer
x = 321.98
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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.