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Finding the Fourth Proportional to 896.92, 1,237.21 and 564.77

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Solution

The fourth proportional to 896.92, 1,237.21 and 564.77 is: 779.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.92 : 1,237.21 = 564.77 : x
  2. Step 2: Convert to fraction form
    896.92/1,237.21 = 564.77/x
  3. Step 3: Cross multiply
    896.92x = 1,237.21 × 564.77
  4. Step 4: Simplify right side
    896.92x = 698,739.09
  5. Step 5: Solve for x
    x = 698,739.09/896.92
  6. Step 6: Final answer
    x = 779.04

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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.