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Finding the Fourth Proportional to 1,249.40, 1,874.88 and 600.80

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Solution

The fourth proportional to 1,249.40, 1,874.88 and 600.80 is: 901.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.40 : 1,874.88 = 600.80 : x
  2. Step 2: Convert to fraction form
    1,249.40/1,874.88 = 600.80/x
  3. Step 3: Cross multiply
    1,249.40x = 1,874.88 × 600.80
  4. Step 4: Simplify right side
    1,249.40x = 1,126,427.90
  5. Step 5: Solve for x
    x = 1,126,427.90/1,249.40
  6. Step 6: Final answer
    x = 901.58

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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.