Finding the Fourth Proportional to 286.99, 430.35 and 124.81
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Solution
The fourth proportional to 286.99, 430.35 and 124.81 is: 187.16
Step by Step Solution
- Step 1: Write the proportion equation
286.99 : 430.35 = 124.81 : x - Step 2: Convert to fraction form
286.99/430.35 = 124.81/x - Step 3: Cross multiply
286.99x = 430.35 × 124.81 - Step 4: Simplify right side
286.99x = 53,711.98 - Step 5: Solve for x
x = 53,711.98/286.99 - Step 6: Final answer
x = 187.16
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.