Home / 1,178.95-1,769.10-449.05

Finding the Fourth Proportional to 1,178.95, 1,769.10 and 449.05

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Solution

The fourth proportional to 1,178.95, 1,769.10 and 449.05 is: 673.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.95 : 1,769.10 = 449.05 : x
  2. Step 2: Convert to fraction form
    1,178.95/1,769.10 = 449.05/x
  3. Step 3: Cross multiply
    1,178.95x = 1,769.10 × 449.05
  4. Step 4: Simplify right side
    1,178.95x = 794,414.36
  5. Step 5: Solve for x
    x = 794,414.36/1,178.95
  6. Step 6: Final answer
    x = 673.83

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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.