Finding the Fourth Proportional to 299.98, 412.99 and 258.49
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Solution
The fourth proportional to 299.98, 412.99 and 258.49 is: 355.87
Step by Step Solution
- Step 1: Write the proportion equation
299.98 : 412.99 = 258.49 : x - Step 2: Convert to fraction form
299.98/412.99 = 258.49/x - Step 3: Cross multiply
299.98x = 412.99 × 258.49 - Step 4: Simplify right side
299.98x = 106,753.79 - Step 5: Solve for x
x = 106,753.79/299.98 - Step 6: Final answer
x = 355.87
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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.