Home / 1,346.31-2,019.60-480.42

Finding the Fourth Proportional to 1,346.31, 2,019.60 and 480.42

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Solution

The fourth proportional to 1,346.31, 2,019.60 and 480.42 is: 720.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,346.31 : 2,019.60 = 480.42 : x
  2. Step 2: Convert to fraction form
    1,346.31/2,019.60 = 480.42/x
  3. Step 3: Cross multiply
    1,346.31x = 2,019.60 × 480.42
  4. Step 4: Simplify right side
    1,346.31x = 970,256.23
  5. Step 5: Solve for x
    x = 970,256.23/1,346.31
  6. Step 6: Final answer
    x = 720.68

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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.