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Finding the Fourth Proportional to 335.10, 503.22 and 320.70

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Solution

The fourth proportional to 335.10, 503.22 and 320.70 is: 481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.10 : 503.22 = 320.70 : x
  2. Step 2: Convert to fraction form
    335.10/503.22 = 320.70/x
  3. Step 3: Cross multiply
    335.10x = 503.22 × 320.70
  4. Step 4: Simplify right side
    335.10x = 161,382.65
  5. Step 5: Solve for x
    x = 161,382.65/335.10
  6. Step 6: Final answer
    x = 481.60

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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.