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Finding the Fourth Proportional to 681.98, 941.12 and 371.48

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Solution

The fourth proportional to 681.98, 941.12 and 371.48 is: 512.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.98 : 941.12 = 371.48 : x
  2. Step 2: Convert to fraction form
    681.98/941.12 = 371.48/x
  3. Step 3: Cross multiply
    681.98x = 941.12 × 371.48
  4. Step 4: Simplify right side
    681.98x = 349,607.26
  5. Step 5: Solve for x
    x = 349,607.26/681.98
  6. Step 6: Final answer
    x = 512.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.