Home / 1,429.35-2,144.13-455.55

Finding the Fourth Proportional to 1,429.35, 2,144.13 and 455.55

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Solution

The fourth proportional to 1,429.35, 2,144.13 and 455.55 is: 683.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.35 : 2,144.13 = 455.55 : x
  2. Step 2: Convert to fraction form
    1,429.35/2,144.13 = 455.55/x
  3. Step 3: Cross multiply
    1,429.35x = 2,144.13 × 455.55
  4. Step 4: Simplify right side
    1,429.35x = 976,758.42
  5. Step 5: Solve for x
    x = 976,758.42/1,429.35
  6. Step 6: Final answer
    x = 683.36

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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.