Finding the Fourth Proportional to 448.18, 672.47 and 440.89
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Solution
The fourth proportional to 448.18, 672.47 and 440.89 is: 661.53
Step by Step Solution
- Step 1: Write the proportion equation
448.18 : 672.47 = 440.89 : x - Step 2: Convert to fraction form
448.18/672.47 = 440.89/x - Step 3: Cross multiply
448.18x = 672.47 × 440.89 - Step 4: Simplify right side
448.18x = 296,485.30 - Step 5: Solve for x
x = 296,485.30/448.18 - Step 6: Final answer
x = 661.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.