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Finding the Fourth Proportional to 722.31, 996.56 and 442.25

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Solution

The fourth proportional to 722.31, 996.56 and 442.25 is: 610.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.31 : 996.56 = 442.25 : x
  2. Step 2: Convert to fraction form
    722.31/996.56 = 442.25/x
  3. Step 3: Cross multiply
    722.31x = 996.56 × 442.25
  4. Step 4: Simplify right side
    722.31x = 440,730.60
  5. Step 5: Solve for x
    x = 440,730.60/722.31
  6. Step 6: Final answer
    x = 610.17

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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.