Home / 1,220.57-1,829.73-439.93

Finding the Fourth Proportional to 1,220.57, 1,829.73 and 439.93

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Solution

The fourth proportional to 1,220.57, 1,829.73 and 439.93 is: 659.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.57 : 1,829.73 = 439.93 : x
  2. Step 2: Convert to fraction form
    1,220.57/1,829.73 = 439.93/x
  3. Step 3: Cross multiply
    1,220.57x = 1,829.73 × 439.93
  4. Step 4: Simplify right side
    1,220.57x = 804,943.97
  5. Step 5: Solve for x
    x = 804,943.97/1,220.57
  6. Step 6: Final answer
    x = 659.48

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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.