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Finding the Fourth Proportional to 994.88, 1,372.95 and 552.82

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Solution

The fourth proportional to 994.88, 1,372.95 and 552.82 is: 762.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.88 : 1,372.95 = 552.82 : x
  2. Step 2: Convert to fraction form
    994.88/1,372.95 = 552.82/x
  3. Step 3: Cross multiply
    994.88x = 1,372.95 × 552.82
  4. Step 4: Simplify right side
    994.88x = 758,987.35
  5. Step 5: Solve for x
    x = 758,987.35/994.88
  6. Step 6: Final answer
    x = 762.90

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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.