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Finding the Fourth Proportional to 239.31, 358.83 and 162.23

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Solution

The fourth proportional to 239.31, 358.83 and 162.23 is: 243.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.31 : 358.83 = 162.23 : x
  2. Step 2: Convert to fraction form
    239.31/358.83 = 162.23/x
  3. Step 3: Cross multiply
    239.31x = 358.83 × 162.23
  4. Step 4: Simplify right side
    239.31x = 58,211.20
  5. Step 5: Solve for x
    x = 58,211.20/239.31
  6. Step 6: Final answer
    x = 243.25

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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.