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Finding the Fourth Proportional to 1,179.52, 1,768.58 and 449.15

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Solution

The fourth proportional to 1,179.52, 1,768.58 and 449.15 is: 673.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.52 : 1,768.58 = 449.15 : x
  2. Step 2: Convert to fraction form
    1,179.52/1,768.58 = 449.15/x
  3. Step 3: Cross multiply
    1,179.52x = 1,768.58 × 449.15
  4. Step 4: Simplify right side
    1,179.52x = 794,357.71
  5. Step 5: Solve for x
    x = 794,357.71/1,179.52
  6. Step 6: Final answer
    x = 673.46

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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.