Finding the Fourth Proportional to 665.82, 918.36 and 468.99
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Solution
The fourth proportional to 665.82, 918.36 and 468.99 is: 646.87
Step by Step Solution
- Step 1: Write the proportion equation
665.82 : 918.36 = 468.99 : x - Step 2: Convert to fraction form
665.82/918.36 = 468.99/x - Step 3: Cross multiply
665.82x = 918.36 × 468.99 - Step 4: Simplify right side
665.82x = 430,701.66 - Step 5: Solve for x
x = 430,701.66/665.82 - Step 6: Final answer
x = 646.87
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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.