Home / 1,429.38-2,144.06-455.57

Finding the Fourth Proportional to 1,429.38, 2,144.06 and 455.57

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Solution

The fourth proportional to 1,429.38, 2,144.06 and 455.57 is: 683.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.38 : 2,144.06 = 455.57 : x
  2. Step 2: Convert to fraction form
    1,429.38/2,144.06 = 455.57/x
  3. Step 3: Cross multiply
    1,429.38x = 2,144.06 × 455.57
  4. Step 4: Simplify right side
    1,429.38x = 976,756.42
  5. Step 5: Solve for x
    x = 976,756.42/1,429.38
  6. Step 6: Final answer
    x = 683.34

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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.