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Finding the Fourth Proportional to 447.03, 616.10 and 330.39

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Solution

The fourth proportional to 447.03, 616.10 and 330.39 is: 455.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.03 : 616.10 = 330.39 : x
  2. Step 2: Convert to fraction form
    447.03/616.10 = 330.39/x
  3. Step 3: Cross multiply
    447.03x = 616.10 × 330.39
  4. Step 4: Simplify right side
    447.03x = 203,551.63
  5. Step 5: Solve for x
    x = 203,551.63/447.03
  6. Step 6: Final answer
    x = 455.34

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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.