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Finding the Fourth Proportional to 796.36, 1,098.64 and 486.04

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Solution

The fourth proportional to 796.36, 1,098.64 and 486.04 is: 670.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.36 : 1,098.64 = 486.04 : x
  2. Step 2: Convert to fraction form
    796.36/1,098.64 = 486.04/x
  3. Step 3: Cross multiply
    796.36x = 1,098.64 × 486.04
  4. Step 4: Simplify right side
    796.36x = 533,982.99
  5. Step 5: Solve for x
    x = 533,982.99/796.36
  6. Step 6: Final answer
    x = 670.53

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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.