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Finding the Fourth Proportional to 722.63, 996.76 and 442.77

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Solution

The fourth proportional to 722.63, 996.76 and 442.77 is: 610.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.63 : 996.76 = 442.77 : x
  2. Step 2: Convert to fraction form
    722.63/996.76 = 442.77/x
  3. Step 3: Cross multiply
    722.63x = 996.76 × 442.77
  4. Step 4: Simplify right side
    722.63x = 441,330.44
  5. Step 5: Solve for x
    x = 441,330.44/722.63
  6. Step 6: Final answer
    x = 610.73

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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.