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Finding the Fourth Proportional to 320.27, 481.05 and 239.63

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Solution

The fourth proportional to 320.27, 481.05 and 239.63 is: 359.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.27 : 481.05 = 239.63 : x
  2. Step 2: Convert to fraction form
    320.27/481.05 = 239.63/x
  3. Step 3: Cross multiply
    320.27x = 481.05 × 239.63
  4. Step 4: Simplify right side
    320.27x = 115,271.61
  5. Step 5: Solve for x
    x = 115,271.61/320.27
  6. Step 6: Final answer
    x = 359.93

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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.