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Finding the Fourth Proportional to 1,249.02, 1,873.68 and 383.22

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Solution

The fourth proportional to 1,249.02, 1,873.68 and 383.22 is: 574.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.02 : 1,873.68 = 383.22 : x
  2. Step 2: Convert to fraction form
    1,249.02/1,873.68 = 383.22/x
  3. Step 3: Cross multiply
    1,249.02x = 1,873.68 × 383.22
  4. Step 4: Simplify right side
    1,249.02x = 718,031.65
  5. Step 5: Solve for x
    x = 718,031.65/1,249.02
  6. Step 6: Final answer
    x = 574.88

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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.