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Finding the Fourth Proportional to 796.87, 1,098.44 and 649.24

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Solution

The fourth proportional to 796.87, 1,098.44 and 649.24 is: 894.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.87 : 1,098.44 = 649.24 : x
  2. Step 2: Convert to fraction form
    796.87/1,098.44 = 649.24/x
  3. Step 3: Cross multiply
    796.87x = 1,098.44 × 649.24
  4. Step 4: Simplify right side
    796.87x = 713,151.19
  5. Step 5: Solve for x
    x = 713,151.19/796.87
  6. Step 6: Final answer
    x = 894.94

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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.