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Finding the Fourth Proportional to 316.72, 475.62 and 301.60

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Solution

The fourth proportional to 316.72, 475.62 and 301.60 is: 452.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.72 : 475.62 = 301.60 : x
  2. Step 2: Convert to fraction form
    316.72/475.62 = 301.60/x
  3. Step 3: Cross multiply
    316.72x = 475.62 × 301.60
  4. Step 4: Simplify right side
    316.72x = 143,446.99
  5. Step 5: Solve for x
    x = 143,446.99/316.72
  6. Step 6: Final answer
    x = 452.91

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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.