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Finding the Fourth Proportional to 2,208.99, 3,313.49 and 748.16

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Solution

The fourth proportional to 2,208.99, 3,313.49 and 748.16 is: 1,122.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.99 : 3,313.49 = 748.16 : x
  2. Step 2: Convert to fraction form
    2,208.99/3,313.49 = 748.16/x
  3. Step 3: Cross multiply
    2,208.99x = 3,313.49 × 748.16
  4. Step 4: Simplify right side
    2,208.99x = 2,479,000.37
  5. Step 5: Solve for x
    x = 2,479,000.37/2,208.99
  6. Step 6: Final answer
    x = 1,122.23

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Double scale
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1.5x scale

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.