Home / 1,219.68-1,829.25-479.34

Finding the Fourth Proportional to 1,219.68, 1,829.25 and 479.34

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Solution

The fourth proportional to 1,219.68, 1,829.25 and 479.34 is: 718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219.68 : 1,829.25 = 479.34 : x
  2. Step 2: Convert to fraction form
    1,219.68/1,829.25 = 479.34/x
  3. Step 3: Cross multiply
    1,219.68x = 1,829.25 × 479.34
  4. Step 4: Simplify right side
    1,219.68x = 876,832.70
  5. Step 5: Solve for x
    x = 876,832.70/1,219.68
  6. Step 6: Final answer
    x = 718.90

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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.