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Finding the Fourth Proportional to 630.03, 945.05 and 219.18

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Solution

The fourth proportional to 630.03, 945.05 and 219.18 is: 328.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.03 : 945.05 = 219.18 : x
  2. Step 2: Convert to fraction form
    630.03/945.05 = 219.18/x
  3. Step 3: Cross multiply
    630.03x = 945.05 × 219.18
  4. Step 4: Simplify right side
    630.03x = 207,131.33
  5. Step 5: Solve for x
    x = 207,131.33/630.03
  6. Step 6: Final answer
    x = 328.77

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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.