Home / 1,429.26-2,144.10-455.46

Finding the Fourth Proportional to 1,429.26, 2,144.10 and 455.46

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Solution

The fourth proportional to 1,429.26, 2,144.10 and 455.46 is: 683.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.26 : 2,144.10 = 455.46 : x
  2. Step 2: Convert to fraction form
    1,429.26/2,144.10 = 455.46/x
  3. Step 3: Cross multiply
    1,429.26x = 2,144.10 × 455.46
  4. Step 4: Simplify right side
    1,429.26x = 976,551.79
  5. Step 5: Solve for x
    x = 976,551.79/1,429.26
  6. Step 6: Final answer
    x = 683.26

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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.