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Finding the Fourth Proportional to 1,249.80, 1,724.06 and 1,014.01

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Solution

The fourth proportional to 1,249.80, 1,724.06 and 1,014.01 is: 1,398.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.80 : 1,724.06 = 1,014.01 : x
  2. Step 2: Convert to fraction form
    1,249.80/1,724.06 = 1,014.01/x
  3. Step 3: Cross multiply
    1,249.80x = 1,724.06 × 1,014.01
  4. Step 4: Simplify right side
    1,249.80x = 1,748,212.31
  5. Step 5: Solve for x
    x = 1,748,212.31/1,249.80
  6. Step 6: Final answer
    x = 1,398.80

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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.