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Finding the Fourth Proportional to 327.04, 489.58 and 211.60

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Solution

The fourth proportional to 327.04, 489.58 and 211.60 is: 316.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.04 : 489.58 = 211.60 : x
  2. Step 2: Convert to fraction form
    327.04/489.58 = 211.60/x
  3. Step 3: Cross multiply
    327.04x = 489.58 × 211.60
  4. Step 4: Simplify right side
    327.04x = 103,595.13
  5. Step 5: Solve for x
    x = 103,595.13/327.04
  6. Step 6: Final answer
    x = 316.77

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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.