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Finding the Fourth Proportional to 1,065.38, 1,596.96 and 449.46

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Solution

The fourth proportional to 1,065.38, 1,596.96 and 449.46 is: 673.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.38 : 1,596.96 = 449.46 : x
  2. Step 2: Convert to fraction form
    1,065.38/1,596.96 = 449.46/x
  3. Step 3: Cross multiply
    1,065.38x = 1,596.96 × 449.46
  4. Step 4: Simplify right side
    1,065.38x = 717,769.64
  5. Step 5: Solve for x
    x = 717,769.64/1,065.38
  6. Step 6: Final answer
    x = 673.72

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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.