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Finding the Fourth Proportional to 960.09, 1,324.53 and 712.02

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Solution

The fourth proportional to 960.09, 1,324.53 and 712.02 is: 982.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.09 : 1,324.53 = 712.02 : x
  2. Step 2: Convert to fraction form
    960.09/1,324.53 = 712.02/x
  3. Step 3: Cross multiply
    960.09x = 1,324.53 × 712.02
  4. Step 4: Simplify right side
    960.09x = 943,091.85
  5. Step 5: Solve for x
    x = 943,091.85/960.09
  6. Step 6: Final answer
    x = 982.30

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.