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Finding the Fourth Proportional to 1,249.77, 1,874.37 and 372.19

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Solution

The fourth proportional to 1,249.77, 1,874.37 and 372.19 is: 558.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.77 : 1,874.37 = 372.19 : x
  2. Step 2: Convert to fraction form
    1,249.77/1,874.37 = 372.19/x
  3. Step 3: Cross multiply
    1,249.77x = 1,874.37 × 372.19
  4. Step 4: Simplify right side
    1,249.77x = 697,623.65
  5. Step 5: Solve for x
    x = 697,623.65/1,249.77
  6. Step 6: Final answer
    x = 558.20

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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.