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Finding the Fourth Proportional to 721.02, 994.74 and 546.60

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Solution

The fourth proportional to 721.02, 994.74 and 546.60 is: 754.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    721.02 : 994.74 = 546.60 : x
  2. Step 2: Convert to fraction form
    721.02/994.74 = 546.60/x
  3. Step 3: Cross multiply
    721.02x = 994.74 × 546.60
  4. Step 4: Simplify right side
    721.02x = 543,724.88
  5. Step 5: Solve for x
    x = 543,724.88/721.02
  6. Step 6: Final answer
    x = 754.11

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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.