Home / 1,179.28-1,769.44-486.10

Finding the Fourth Proportional to 1,179.28, 1,769.44 and 486.10

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Solution

The fourth proportional to 1,179.28, 1,769.44 and 486.10 is: 729.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.28 : 1,769.44 = 486.10 : x
  2. Step 2: Convert to fraction form
    1,179.28/1,769.44 = 486.10/x
  3. Step 3: Cross multiply
    1,179.28x = 1,769.44 × 486.10
  4. Step 4: Simplify right side
    1,179.28x = 860,119.15
  5. Step 5: Solve for x
    x = 860,119.15/1,179.28
  6. Step 6: Final answer
    x = 729.36

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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.