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Finding the Fourth Proportional to 1,200.27, 1,797.64 and 1,031.60

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Solution

The fourth proportional to 1,200.27, 1,797.64 and 1,031.60 is: 1,545.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200.27 : 1,797.64 = 1,031.60 : x
  2. Step 2: Convert to fraction form
    1,200.27/1,797.64 = 1,031.60/x
  3. Step 3: Cross multiply
    1,200.27x = 1,797.64 × 1,031.60
  4. Step 4: Simplify right side
    1,200.27x = 1,854,445.42
  5. Step 5: Solve for x
    x = 1,854,445.42/1,200.27
  6. Step 6: Final answer
    x = 1,545.02

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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.