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Finding the Fourth Proportional to 890.70, 1,229.78 and 596.82

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Solution

The fourth proportional to 890.70, 1,229.78 and 596.82 is: 824.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.70 : 1,229.78 = 596.82 : x
  2. Step 2: Convert to fraction form
    890.70/1,229.78 = 596.82/x
  3. Step 3: Cross multiply
    890.70x = 1,229.78 × 596.82
  4. Step 4: Simplify right side
    890.70x = 733,957.30
  5. Step 5: Solve for x
    x = 733,957.30/890.70
  6. Step 6: Final answer
    x = 824.02

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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.