Home / 1,150.12-1,725.18-419.38

Finding the Fourth Proportional to 1,150.12, 1,725.18 and 419.38

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Solution

The fourth proportional to 1,150.12, 1,725.18 and 419.38 is: 629.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150.12 : 1,725.18 = 419.38 : x
  2. Step 2: Convert to fraction form
    1,150.12/1,725.18 = 419.38/x
  3. Step 3: Cross multiply
    1,150.12x = 1,725.18 × 419.38
  4. Step 4: Simplify right side
    1,150.12x = 723,505.99
  5. Step 5: Solve for x
    x = 723,505.99/1,150.12
  6. Step 6: Final answer
    x = 629.07

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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.