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Finding the Fourth Proportional to 239.01, 358.21 and 170.39

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Solution

The fourth proportional to 239.01, 358.21 and 170.39 is: 255.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.01 : 358.21 = 170.39 : x
  2. Step 2: Convert to fraction form
    239.01/358.21 = 170.39/x
  3. Step 3: Cross multiply
    239.01x = 358.21 × 170.39
  4. Step 4: Simplify right side
    239.01x = 61,035.40
  5. Step 5: Solve for x
    x = 61,035.40/239.01
  6. Step 6: Final answer
    x = 255.37

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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.