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Finding the Fourth Proportional to 1,254.26, 1,881.12 and 388.38

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Solution

The fourth proportional to 1,254.26, 1,881.12 and 388.38 is: 582.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.26 : 1,881.12 = 388.38 : x
  2. Step 2: Convert to fraction form
    1,254.26/1,881.12 = 388.38/x
  3. Step 3: Cross multiply
    1,254.26x = 1,881.12 × 388.38
  4. Step 4: Simplify right side
    1,254.26x = 730,589.39
  5. Step 5: Solve for x
    x = 730,589.39/1,254.26
  6. Step 6: Final answer
    x = 582.49

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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.