Finding the Fourth Proportional to 320.00, 479.95 and 146.48
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Solution
The fourth proportional to 320.00, 479.95 and 146.48 is: 219.69
Step by Step Solution
- Step 1: Write the proportion equation
320.00 : 479.95 = 146.48 : x - Step 2: Convert to fraction form
320.00/479.95 = 146.48/x - Step 3: Cross multiply
320.00x = 479.95 × 146.48 - Step 4: Simplify right side
320.00x = 70,300.31 - Step 5: Solve for x
x = 70,300.31/320.00 - Step 6: Final answer
x = 219.69
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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.