Home / 1,122.14-1,683.10-300.38

Finding the Fourth Proportional to 1,122.14, 1,683.10 and 300.38

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Solution

The fourth proportional to 1,122.14, 1,683.10 and 300.38 is: 450.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.14 : 1,683.10 = 300.38 : x
  2. Step 2: Convert to fraction form
    1,122.14/1,683.10 = 300.38/x
  3. Step 3: Cross multiply
    1,122.14x = 1,683.10 × 300.38
  4. Step 4: Simplify right side
    1,122.14x = 505,569.58
  5. Step 5: Solve for x
    x = 505,569.58/1,122.14
  6. Step 6: Final answer
    x = 450.54

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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.