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Finding the Fourth Proportional to 407.66, 563.38 and 333.86

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Solution

The fourth proportional to 407.66, 563.38 and 333.86 is: 461.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.66 : 563.38 = 333.86 : x
  2. Step 2: Convert to fraction form
    407.66/563.38 = 333.86/x
  3. Step 3: Cross multiply
    407.66x = 563.38 × 333.86
  4. Step 4: Simplify right side
    407.66x = 188,090.05
  5. Step 5: Solve for x
    x = 188,090.05/407.66
  6. Step 6: Final answer
    x = 461.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.