Home / 1,230.35-1,845.60-409.19

Finding the Fourth Proportional to 1,230.35, 1,845.60 and 409.19

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Solution

The fourth proportional to 1,230.35, 1,845.60 and 409.19 is: 613.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.35 : 1,845.60 = 409.19 : x
  2. Step 2: Convert to fraction form
    1,230.35/1,845.60 = 409.19/x
  3. Step 3: Cross multiply
    1,230.35x = 1,845.60 × 409.19
  4. Step 4: Simplify right side
    1,230.35x = 755,190.30
  5. Step 5: Solve for x
    x = 755,190.30/1,230.35
  6. Step 6: Final answer
    x = 613.80

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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.