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Finding the Fourth Proportional to 721.55, 997.04 and 546.59

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Solution

The fourth proportional to 721.55, 997.04 and 546.59 is: 755.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    721.55 : 997.04 = 546.59 : x
  2. Step 2: Convert to fraction form
    721.55/997.04 = 546.59/x
  3. Step 3: Cross multiply
    721.55x = 997.04 × 546.59
  4. Step 4: Simplify right side
    721.55x = 544,969.36
  5. Step 5: Solve for x
    x = 544,969.36/721.55
  6. Step 6: Final answer
    x = 755.28

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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.