Finding the Fourth Proportional to 430.68, 645.99 and 106.05
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Solution
The fourth proportional to 430.68, 645.99 and 106.05 is: 159.07
Step by Step Solution
- Step 1: Write the proportion equation
430.68 : 645.99 = 106.05 : x - Step 2: Convert to fraction form
430.68/645.99 = 106.05/x - Step 3: Cross multiply
430.68x = 645.99 × 106.05 - Step 4: Simplify right side
430.68x = 68,507.24 - Step 5: Solve for x
x = 68,507.24/430.68 - Step 6: Final answer
x = 159.07
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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.