Finding the Fourth Proportional to 929.94, 1,395.08 and 313.70
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Solution
The fourth proportional to 929.94, 1,395.08 and 313.70 is: 470.60
Step by Step Solution
- Step 1: Write the proportion equation
929.94 : 1,395.08 = 313.70 : x - Step 2: Convert to fraction form
929.94/1,395.08 = 313.70/x - Step 3: Cross multiply
929.94x = 1,395.08 × 313.70 - Step 4: Simplify right side
929.94x = 437,628.05 - Step 5: Solve for x
x = 437,628.05/929.94 - Step 6: Final answer
x = 470.60
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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.