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Finding the Fourth Proportional to 239.46, 330.47 and 134.54

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Solution

The fourth proportional to 239.46, 330.47 and 134.54 is: 185.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.46 : 330.47 = 134.54 : x
  2. Step 2: Convert to fraction form
    239.46/330.47 = 134.54/x
  3. Step 3: Cross multiply
    239.46x = 330.47 × 134.54
  4. Step 4: Simplify right side
    239.46x = 44,462.71
  5. Step 5: Solve for x
    x = 44,462.71/239.46
  6. Step 6: Final answer
    x = 185.68

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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.