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Finding the Fourth Proportional to 816.03, 1,126.11 and 484.62

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Solution

The fourth proportional to 816.03, 1,126.11 and 484.62 is: 668.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    816.03 : 1,126.11 = 484.62 : x
  2. Step 2: Convert to fraction form
    816.03/1,126.11 = 484.62/x
  3. Step 3: Cross multiply
    816.03x = 1,126.11 × 484.62
  4. Step 4: Simplify right side
    816.03x = 545,735.43
  5. Step 5: Solve for x
    x = 545,735.43/816.03
  6. Step 6: Final answer
    x = 668.77

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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.