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Finding the Fourth Proportional to 1,426.01, 2,138.94 and 400.01

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Solution

The fourth proportional to 1,426.01, 2,138.94 and 400.01 is: 599.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.01 : 2,138.94 = 400.01 : x
  2. Step 2: Convert to fraction form
    1,426.01/2,138.94 = 400.01/x
  3. Step 3: Cross multiply
    1,426.01x = 2,138.94 × 400.01
  4. Step 4: Simplify right side
    1,426.01x = 855,586.69
  5. Step 5: Solve for x
    x = 855,586.69/1,426.01
  6. Step 6: Final answer
    x = 599.99

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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.