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Finding the Fourth Proportional to 335.15, 499.90 and 324.90

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Solution

The fourth proportional to 335.15, 499.90 and 324.90 is: 484.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.15 : 499.90 = 324.90 : x
  2. Step 2: Convert to fraction form
    335.15/499.90 = 324.90/x
  3. Step 3: Cross multiply
    335.15x = 499.90 × 324.90
  4. Step 4: Simplify right side
    335.15x = 162,416.72
  5. Step 5: Solve for x
    x = 162,416.72/335.15
  6. Step 6: Final answer
    x = 484.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.