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Finding the Fourth Proportional to 239.48, 330.50 and 202.59

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Solution

The fourth proportional to 239.48, 330.50 and 202.59 is: 279.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.48 : 330.50 = 202.59 : x
  2. Step 2: Convert to fraction form
    239.48/330.50 = 202.59/x
  3. Step 3: Cross multiply
    239.48x = 330.50 × 202.59
  4. Step 4: Simplify right side
    239.48x = 66,954.98
  5. Step 5: Solve for x
    x = 66,954.98/239.48
  6. Step 6: Final answer
    x = 279.59

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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.