Home / 1,218.28-1,827.52-396.68

Finding the Fourth Proportional to 1,218.28, 1,827.52 and 396.68

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Solution

The fourth proportional to 1,218.28, 1,827.52 and 396.68 is: 595.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.28 : 1,827.52 = 396.68 : x
  2. Step 2: Convert to fraction form
    1,218.28/1,827.52 = 396.68/x
  3. Step 3: Cross multiply
    1,218.28x = 1,827.52 × 396.68
  4. Step 4: Simplify right side
    1,218.28x = 724,940.63
  5. Step 5: Solve for x
    x = 724,940.63/1,218.28
  6. Step 6: Final answer
    x = 595.05

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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.