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Finding the Fourth Proportional to 1,361.88, 2,042.10 and 591.48

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Solution

The fourth proportional to 1,361.88, 2,042.10 and 591.48 is: 886.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361.88 : 2,042.10 = 591.48 : x
  2. Step 2: Convert to fraction form
    1,361.88/2,042.10 = 591.48/x
  3. Step 3: Cross multiply
    1,361.88x = 2,042.10 × 591.48
  4. Step 4: Simplify right side
    1,361.88x = 1,207,861.31
  5. Step 5: Solve for x
    x = 1,207,861.31/1,361.88
  6. Step 6: Final answer
    x = 886.91

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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.