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Finding the Fourth Proportional to 827.38, 1,246.88 and 745.22

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Solution

The fourth proportional to 827.38, 1,246.88 and 745.22 is: 1,123.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    827.38 : 1,246.88 = 745.22 : x
  2. Step 2: Convert to fraction form
    827.38/1,246.88 = 745.22/x
  3. Step 3: Cross multiply
    827.38x = 1,246.88 × 745.22
  4. Step 4: Simplify right side
    827.38x = 929,193.92
  5. Step 5: Solve for x
    x = 929,193.92/827.38
  6. Step 6: Final answer
    x = 1,123.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.