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Finding the Fourth Proportional to 335.87, 505.92 and 315.36

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Solution

The fourth proportional to 335.87, 505.92 and 315.36 is: 475.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.87 : 505.92 = 315.36 : x
  2. Step 2: Convert to fraction form
    335.87/505.92 = 315.36/x
  3. Step 3: Cross multiply
    335.87x = 505.92 × 315.36
  4. Step 4: Simplify right side
    335.87x = 159,546.62
  5. Step 5: Solve for x
    x = 159,546.62/335.87
  6. Step 6: Final answer
    x = 475.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.