Home / 1,218.09-1,827.42-396.30

Finding the Fourth Proportional to 1,218.09, 1,827.42 and 396.30

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Solution

The fourth proportional to 1,218.09, 1,827.42 and 396.30 is: 594.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.09 : 1,827.42 = 396.30 : x
  2. Step 2: Convert to fraction form
    1,218.09/1,827.42 = 396.30/x
  3. Step 3: Cross multiply
    1,218.09x = 1,827.42 × 396.30
  4. Step 4: Simplify right side
    1,218.09x = 724,206.55
  5. Step 5: Solve for x
    x = 724,206.55/1,218.09
  6. Step 6: Final answer
    x = 594.54

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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.