Home / 1,159.92-1,739.79-338.20

Finding the Fourth Proportional to 1,159.92, 1,739.79 and 338.20

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Solution

The fourth proportional to 1,159.92, 1,739.79 and 338.20 is: 507.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159.92 : 1,739.79 = 338.20 : x
  2. Step 2: Convert to fraction form
    1,159.92/1,739.79 = 338.20/x
  3. Step 3: Cross multiply
    1,159.92x = 1,739.79 × 338.20
  4. Step 4: Simplify right side
    1,159.92x = 588,396.98
  5. Step 5: Solve for x
    x = 588,396.98/1,159.92
  6. Step 6: Final answer
    x = 507.27

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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.