Finding the Fourth Proportional to 430.60, 645.36 and 199.12
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Solution
The fourth proportional to 430.60, 645.36 and 199.12 is: 298.43
Step by Step Solution
- Step 1: Write the proportion equation
430.60 : 645.36 = 199.12 : x - Step 2: Convert to fraction form
430.60/645.36 = 199.12/x - Step 3: Cross multiply
430.60x = 645.36 × 199.12 - Step 4: Simplify right side
430.60x = 128,504.08 - Step 5: Solve for x
x = 128,504.08/430.60 - Step 6: Final answer
x = 298.43
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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.