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Finding the Fourth Proportional to 317.20, 475.95 and 201.62

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Solution

The fourth proportional to 317.20, 475.95 and 201.62 is: 302.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.20 : 475.95 = 201.62 : x
  2. Step 2: Convert to fraction form
    317.20/475.95 = 201.62/x
  3. Step 3: Cross multiply
    317.20x = 475.95 × 201.62
  4. Step 4: Simplify right side
    317.20x = 95,959.43
  5. Step 5: Solve for x
    x = 95,959.43/317.20
  6. Step 6: Final answer
    x = 302.52

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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.