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Finding the Fourth Proportional to 303.99, 455.17 and 243.24

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Solution

The fourth proportional to 303.99, 455.17 and 243.24 is: 364.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.99 : 455.17 = 243.24 : x
  2. Step 2: Convert to fraction form
    303.99/455.17 = 243.24/x
  3. Step 3: Cross multiply
    303.99x = 455.17 × 243.24
  4. Step 4: Simplify right side
    303.99x = 110,713.69
  5. Step 5: Solve for x
    x = 110,713.69/303.99
  6. Step 6: Final answer
    x = 364.21

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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.