Finding the Fourth Proportional to 259.99, 390.16 and 113.70
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Solution
The fourth proportional to 259.99, 390.16 and 113.70 is: 170.63
Step by Step Solution
- Step 1: Write the proportion equation
259.99 : 390.16 = 113.70 : x - Step 2: Convert to fraction form
259.99/390.16 = 113.70/x - Step 3: Cross multiply
259.99x = 390.16 × 113.70 - Step 4: Simplify right side
259.99x = 44,361.19 - Step 5: Solve for x
x = 44,361.19/259.99 - Step 6: Final answer
x = 170.63
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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.