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Finding the Fourth Proportional to 239.31, 358.86 and 93.09

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Solution

The fourth proportional to 239.31, 358.86 and 93.09 is: 139.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.31 : 358.86 = 93.09 : x
  2. Step 2: Convert to fraction form
    239.31/358.86 = 93.09/x
  3. Step 3: Cross multiply
    239.31x = 358.86 × 93.09
  4. Step 4: Simplify right side
    239.31x = 33,406.28
  5. Step 5: Solve for x
    x = 33,406.28/239.31
  6. Step 6: Final answer
    x = 139.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.