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Finding the Fourth Proportional to 1,479.90, 2,221.08 and 1,049.80

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Solution

The fourth proportional to 1,479.90, 2,221.08 and 1,049.80 is: 1,575.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.90 : 2,221.08 = 1,049.80 : x
  2. Step 2: Convert to fraction form
    1,479.90/2,221.08 = 1,049.80/x
  3. Step 3: Cross multiply
    1,479.90x = 2,221.08 × 1,049.80
  4. Step 4: Simplify right side
    1,479.90x = 2,331,689.78
  5. Step 5: Solve for x
    x = 2,331,689.78/1,479.90
  6. Step 6: Final answer
    x = 1,575.57

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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.