Home / 1,430.49-2,145.43-404.25

Finding the Fourth Proportional to 1,430.49, 2,145.43 and 404.25

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Solution

The fourth proportional to 1,430.49, 2,145.43 and 404.25 is: 606.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.49 : 2,145.43 = 404.25 : x
  2. Step 2: Convert to fraction form
    1,430.49/2,145.43 = 404.25/x
  3. Step 3: Cross multiply
    1,430.49x = 2,145.43 × 404.25
  4. Step 4: Simplify right side
    1,430.49x = 867,290.08
  5. Step 5: Solve for x
    x = 867,290.08/1,430.49
  6. Step 6: Final answer
    x = 606.29

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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.