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Finding the Fourth Proportional to 450.13, 621.17 and 243.13

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Solution

The fourth proportional to 450.13, 621.17 and 243.13 is: 335.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.13 : 621.17 = 243.13 : x
  2. Step 2: Convert to fraction form
    450.13/621.17 = 243.13/x
  3. Step 3: Cross multiply
    450.13x = 621.17 × 243.13
  4. Step 4: Simplify right side
    450.13x = 151,022.56
  5. Step 5: Solve for x
    x = 151,022.56/450.13
  6. Step 6: Final answer
    x = 335.51

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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.