Finding the Fourth Proportional to 372.81, 558.84 and 189.99
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Solution
The fourth proportional to 372.81, 558.84 and 189.99 is: 284.79
Step by Step Solution
- Step 1: Write the proportion equation
372.81 : 558.84 = 189.99 : x - Step 2: Convert to fraction form
372.81/558.84 = 189.99/x - Step 3: Cross multiply
372.81x = 558.84 × 189.99 - Step 4: Simplify right side
372.81x = 106,174.01 - Step 5: Solve for x
x = 106,174.01/372.81 - Step 6: Final answer
x = 284.79
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.