Finding the Fourth Proportional to 1,011.88, 1,518.03 and 318.62
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Solution
The fourth proportional to 1,011.88, 1,518.03 and 318.62 is: 477.99
Step by Step Solution
- Step 1: Write the proportion equation
1,011.88 : 1,518.03 = 318.62 : x - Step 2: Convert to fraction form
1,011.88/1,518.03 = 318.62/x - Step 3: Cross multiply
1,011.88x = 1,518.03 × 318.62 - Step 4: Simplify right side
1,011.88x = 483,667.13 - Step 5: Solve for x
x = 483,667.13/1,011.88 - Step 6: Final answer
x = 477.99
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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.