Finding the Fourth Proportional to 415.49, 572.99 and 282.65
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Solution
The fourth proportional to 415.49, 572.99 and 282.65 is: 389.79
Step by Step Solution
- Step 1: Write the proportion equation
415.49 : 572.99 = 282.65 : x - Step 2: Convert to fraction form
415.49/572.99 = 282.65/x - Step 3: Cross multiply
415.49x = 572.99 × 282.65 - Step 4: Simplify right side
415.49x = 161,952.94 - Step 5: Solve for x
x = 161,952.94/415.49 - Step 6: Final answer
x = 389.79
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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.