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Finding the Fourth Proportional to 1,373.95, 2,060.79 and 449.25

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Solution

The fourth proportional to 1,373.95, 2,060.79 and 449.25 is: 673.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373.95 : 2,060.79 = 449.25 : x
  2. Step 2: Convert to fraction form
    1,373.95/2,060.79 = 449.25/x
  3. Step 3: Cross multiply
    1,373.95x = 2,060.79 × 449.25
  4. Step 4: Simplify right side
    1,373.95x = 925,809.91
  5. Step 5: Solve for x
    x = 925,809.91/1,373.95
  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.