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Finding the Fourth Proportional to 239.23, 330.11 and 134.30

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Solution

The fourth proportional to 239.23, 330.11 and 134.30 is: 185.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.23 : 330.11 = 134.30 : x
  2. Step 2: Convert to fraction form
    239.23/330.11 = 134.30/x
  3. Step 3: Cross multiply
    239.23x = 330.11 × 134.30
  4. Step 4: Simplify right side
    239.23x = 44,333.19
  5. Step 5: Solve for x
    x = 44,333.19/239.23
  6. Step 6: Final answer
    x = 185.32

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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.