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Finding the Fourth Proportional to 1,249.02, 1,723.68 and 751.68

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Solution

The fourth proportional to 1,249.02, 1,723.68 and 751.68 is: 1,037.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.02 : 1,723.68 = 751.68 : x
  2. Step 2: Convert to fraction form
    1,249.02/1,723.68 = 751.68/x
  3. Step 3: Cross multiply
    1,249.02x = 1,723.68 × 751.68
  4. Step 4: Simplify right side
    1,249.02x = 1,295,655.78
  5. Step 5: Solve for x
    x = 1,295,655.78/1,249.02
  6. Step 6: Final answer
    x = 1,037.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.