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Finding the Fourth Proportional to 1,249.68, 1,872.82 and 591.45

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Solution

The fourth proportional to 1,249.68, 1,872.82 and 591.45 is: 886.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.68 : 1,872.82 = 591.45 : x
  2. Step 2: Convert to fraction form
    1,249.68/1,872.82 = 591.45/x
  3. Step 3: Cross multiply
    1,249.68x = 1,872.82 × 591.45
  4. Step 4: Simplify right side
    1,249.68x = 1,107,683.64
  5. Step 5: Solve for x
    x = 1,107,683.64/1,249.68
  6. Step 6: Final answer
    x = 886.38

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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.