Finding the Fourth Proportional to 955.21, 1,430.99 and 646.53
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Solution
The fourth proportional to 955.21, 1,430.99 and 646.53 is: 968.56
Step by Step Solution
- Step 1: Write the proportion equation
955.21 : 1,430.99 = 646.53 : x - Step 2: Convert to fraction form
955.21/1,430.99 = 646.53/x - Step 3: Cross multiply
955.21x = 1,430.99 × 646.53 - Step 4: Simplify right side
955.21x = 925,174.73 - Step 5: Solve for x
x = 925,174.73/955.21 - Step 6: Final answer
x = 968.56
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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.