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Finding the Fourth Proportional to 436.28, 602.08 and 239.80

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Solution

The fourth proportional to 436.28, 602.08 and 239.80 is: 330.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.28 : 602.08 = 239.80 : x
  2. Step 2: Convert to fraction form
    436.28/602.08 = 239.80/x
  3. Step 3: Cross multiply
    436.28x = 602.08 × 239.80
  4. Step 4: Simplify right side
    436.28x = 144,374.57
  5. Step 5: Solve for x
    x = 144,374.57/436.28
  6. Step 6: Final answer
    x = 330.92

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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.