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Finding the Fourth Proportional to 630.33, 945.39 and 219.47

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Solution

The fourth proportional to 630.33, 945.39 and 219.47 is: 329.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.33 : 945.39 = 219.47 : x
  2. Step 2: Convert to fraction form
    630.33/945.39 = 219.47/x
  3. Step 3: Cross multiply
    630.33x = 945.39 × 219.47
  4. Step 4: Simplify right side
    630.33x = 207,480.02
  5. Step 5: Solve for x
    x = 207,480.02/630.33
  6. Step 6: Final answer
    x = 329.16

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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.