Home / 1,424.23-2,135.99-450.34

Finding the Fourth Proportional to 1,424.23, 2,135.99 and 450.34

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Solution

The fourth proportional to 1,424.23, 2,135.99 and 450.34 is: 675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.23 : 2,135.99 = 450.34 : x
  2. Step 2: Convert to fraction form
    1,424.23/2,135.99 = 450.34/x
  3. Step 3: Cross multiply
    1,424.23x = 2,135.99 × 450.34
  4. Step 4: Simplify right side
    1,424.23x = 961,917.52
  5. Step 5: Solve for x
    x = 961,917.52/1,424.23
  6. Step 6: Final answer
    x = 675.40

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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.