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Finding the Fourth Proportional to 330.03, 491.18 and 329.00

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Solution

The fourth proportional to 330.03, 491.18 and 329.00 is: 489.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.03 : 491.18 = 329.00 : x
  2. Step 2: Convert to fraction form
    330.03/491.18 = 329.00/x
  3. Step 3: Cross multiply
    330.03x = 491.18 × 329.00
  4. Step 4: Simplify right side
    330.03x = 161,594.12
  5. Step 5: Solve for x
    x = 161,594.12/330.03
  6. Step 6: Final answer
    x = 489.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.