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Finding the Fourth Proportional to 317.33, 475.82 and 141.67

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Solution

The fourth proportional to 317.33, 475.82 and 141.67 is: 212.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.33 : 475.82 = 141.67 : x
  2. Step 2: Convert to fraction form
    317.33/475.82 = 141.67/x
  3. Step 3: Cross multiply
    317.33x = 475.82 × 141.67
  4. Step 4: Simplify right side
    317.33x = 67,409.42
  5. Step 5: Solve for x
    x = 67,409.42/317.33
  6. Step 6: Final answer
    x = 212.43

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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.