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Finding the Fourth Proportional to 630.37, 945.55 and 219.50

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Solution

The fourth proportional to 630.37, 945.55 and 219.50 is: 329.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.37 : 945.55 = 219.50 : x
  2. Step 2: Convert to fraction form
    630.37/945.55 = 219.50/x
  3. Step 3: Cross multiply
    630.37x = 945.55 × 219.50
  4. Step 4: Simplify right side
    630.37x = 207,548.23
  5. Step 5: Solve for x
    x = 207,548.23/630.37
  6. Step 6: Final answer
    x = 329.25

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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.