Finding the Fourth Proportional to 291.99, 399.19 and 291.99
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Solution
The fourth proportional to 291.99, 399.19 and 291.99 is: 399.19
Step by Step Solution
- Step 1: Write the proportion equation
291.99 : 399.19 = 291.99 : x - Step 2: Convert to fraction form
291.99/399.19 = 291.99/x - Step 3: Cross multiply
291.99x = 399.19 × 291.99 - Step 4: Simplify right side
291.99x = 116,558.76 - Step 5: Solve for x
x = 116,558.76/291.99 - Step 6: Final answer
x = 399.19
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These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.