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Finding the Fourth Proportional to 436.27, 602.06 and 239.78

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Solution

The fourth proportional to 436.27, 602.06 and 239.78 is: 330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.27 : 602.06 = 239.78 : x
  2. Step 2: Convert to fraction form
    436.27/602.06 = 239.78/x
  3. Step 3: Cross multiply
    436.27x = 602.06 × 239.78
  4. Step 4: Simplify right side
    436.27x = 144,359.54
  5. Step 5: Solve for x
    x = 144,359.54/436.27
  6. Step 6: Final answer
    x = 330.90

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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.