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Finding the Fourth Proportional to 447.05, 616.76 and 342.03

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Solution

The fourth proportional to 447.05, 616.76 and 342.03 is: 471.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.05 : 616.76 = 342.03 : x
  2. Step 2: Convert to fraction form
    447.05/616.76 = 342.03/x
  3. Step 3: Cross multiply
    447.05x = 616.76 × 342.03
  4. Step 4: Simplify right side
    447.05x = 210,945.63
  5. Step 5: Solve for x
    x = 210,945.63/447.05
  6. Step 6: Final answer
    x = 471.87

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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.