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Finding the Fourth Proportional to 1,250.96, 1,871.28 and 1,029.11

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Solution

The fourth proportional to 1,250.96, 1,871.28 and 1,029.11 is: 1,539.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250.96 : 1,871.28 = 1,029.11 : x
  2. Step 2: Convert to fraction form
    1,250.96/1,871.28 = 1,029.11/x
  3. Step 3: Cross multiply
    1,250.96x = 1,871.28 × 1,029.11
  4. Step 4: Simplify right side
    1,250.96x = 1,925,743.60
  5. Step 5: Solve for x
    x = 1,925,743.60/1,250.96
  6. Step 6: Final answer
    x = 1,539.42

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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.