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Finding the Fourth Proportional to 822.01, 1,228.21 and 793.32

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Solution

The fourth proportional to 822.01, 1,228.21 and 793.32 is: 1,185.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.01 : 1,228.21 = 793.32 : x
  2. Step 2: Convert to fraction form
    822.01/1,228.21 = 793.32/x
  3. Step 3: Cross multiply
    822.01x = 1,228.21 × 793.32
  4. Step 4: Simplify right side
    822.01x = 974,363.56
  5. Step 5: Solve for x
    x = 974,363.56/822.01
  6. Step 6: Final answer
    x = 1,185.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.