Home / 1,445.33-2,167.60-405.27

Finding the Fourth Proportional to 1,445.33, 2,167.60 and 405.27

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Solution

The fourth proportional to 1,445.33, 2,167.60 and 405.27 is: 607.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.33 : 2,167.60 = 405.27 : x
  2. Step 2: Convert to fraction form
    1,445.33/2,167.60 = 405.27/x
  3. Step 3: Cross multiply
    1,445.33x = 2,167.60 × 405.27
  4. Step 4: Simplify right side
    1,445.33x = 878,463.25
  5. Step 5: Solve for x
    x = 878,463.25/1,445.33
  6. Step 6: Final answer
    x = 607.79

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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.