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Finding the Fourth Proportional to 793.97, 1,188.90 and 547.93

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Solution

The fourth proportional to 793.97, 1,188.90 and 547.93 is: 820.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.97 : 1,188.90 = 547.93 : x
  2. Step 2: Convert to fraction form
    793.97/1,188.90 = 547.93/x
  3. Step 3: Cross multiply
    793.97x = 1,188.90 × 547.93
  4. Step 4: Simplify right side
    793.97x = 651,428.95
  5. Step 5: Solve for x
    x = 651,428.95/793.97
  6. Step 6: Final answer
    x = 820.48

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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.