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Finding the Fourth Proportional to 1,301.32, 1,949.68 and 683.56

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Solution

The fourth proportional to 1,301.32, 1,949.68 and 683.56 is: 1,024.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301.32 : 1,949.68 = 683.56 : x
  2. Step 2: Convert to fraction form
    1,301.32/1,949.68 = 683.56/x
  3. Step 3: Cross multiply
    1,301.32x = 1,949.68 × 683.56
  4. Step 4: Simplify right side
    1,301.32x = 1,332,723.26
  5. Step 5: Solve for x
    x = 1,332,723.26/1,301.32
  6. Step 6: Final answer
    x = 1,024.13

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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.