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Finding the Fourth Proportional to 722.17, 996.76 and 612.46

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Solution

The fourth proportional to 722.17, 996.76 and 612.46 is: 845.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.17 : 996.76 = 612.46 : x
  2. Step 2: Convert to fraction form
    722.17/996.76 = 612.46/x
  3. Step 3: Cross multiply
    722.17x = 996.76 × 612.46
  4. Step 4: Simplify right side
    722.17x = 610,474.20
  5. Step 5: Solve for x
    x = 610,474.20/722.17
  6. Step 6: Final answer
    x = 845.34

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1.5x scale

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.