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Finding the Fourth Proportional to 320.95, 481.58 and 239.95

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Solution

The fourth proportional to 320.95, 481.58 and 239.95 is: 360.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.95 : 481.58 = 239.95 : x
  2. Step 2: Convert to fraction form
    320.95/481.58 = 239.95/x
  3. Step 3: Cross multiply
    320.95x = 481.58 × 239.95
  4. Step 4: Simplify right side
    320.95x = 115,555.12
  5. Step 5: Solve for x
    x = 115,555.12/320.95
  6. Step 6: Final answer
    x = 360.04

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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.