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Finding the Fourth Proportional to 822.93, 1,233.22 and 578.95

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Solution

The fourth proportional to 822.93, 1,233.22 and 578.95 is: 867.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.93 : 1,233.22 = 578.95 : x
  2. Step 2: Convert to fraction form
    822.93/1,233.22 = 578.95/x
  3. Step 3: Cross multiply
    822.93x = 1,233.22 × 578.95
  4. Step 4: Simplify right side
    822.93x = 713,972.72
  5. Step 5: Solve for x
    x = 713,972.72/822.93
  6. Step 6: Final answer
    x = 867.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.