Home / 1,493.22-2,238.55-519.20

Finding the Fourth Proportional to 1,493.22, 2,238.55 and 519.20

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Solution

The fourth proportional to 1,493.22, 2,238.55 and 519.20 is: 778.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,493.22 : 2,238.55 = 519.20 : x
  2. Step 2: Convert to fraction form
    1,493.22/2,238.55 = 519.20/x
  3. Step 3: Cross multiply
    1,493.22x = 2,238.55 × 519.20
  4. Step 4: Simplify right side
    1,493.22x = 1,162,242.67
  5. Step 5: Solve for x
    x = 1,162,242.67/1,493.22
  6. Step 6: Final answer
    x = 778.35

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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.