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Finding the Fourth Proportional to 553.20, 829.65 and 163.09

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Solution

The fourth proportional to 553.20, 829.65 and 163.09 is: 244.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.20 : 829.65 = 163.09 : x
  2. Step 2: Convert to fraction form
    553.20/829.65 = 163.09/x
  3. Step 3: Cross multiply
    553.20x = 829.65 × 163.09
  4. Step 4: Simplify right side
    553.20x = 135,309.27
  5. Step 5: Solve for x
    x = 135,309.27/553.20
  6. Step 6: Final answer
    x = 244.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.