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Finding the Fourth Proportional to 1,179.46, 1,769.17 and 448.87

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Solution

The fourth proportional to 1,179.46, 1,769.17 and 448.87 is: 673.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.46 : 1,769.17 = 448.87 : x
  2. Step 2: Convert to fraction form
    1,179.46/1,769.17 = 448.87/x
  3. Step 3: Cross multiply
    1,179.46x = 1,769.17 × 448.87
  4. Step 4: Simplify right side
    1,179.46x = 794,127.34
  5. Step 5: Solve for x
    x = 794,127.34/1,179.46
  6. Step 6: Final answer
    x = 673.30

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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.