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Finding the Fourth Proportional to 456.52, 685.02 and 200.20

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Solution

The fourth proportional to 456.52, 685.02 and 200.20 is: 300.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.52 : 685.02 = 200.20 : x
  2. Step 2: Convert to fraction form
    456.52/685.02 = 200.20/x
  3. Step 3: Cross multiply
    456.52x = 685.02 × 200.20
  4. Step 4: Simplify right side
    456.52x = 137,141.00
  5. Step 5: Solve for x
    x = 137,141.00/456.52
  6. Step 6: Final answer
    x = 300.41

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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.