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Finding the Fourth Proportional to 630.03, 945.17 and 219.15

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Solution

The fourth proportional to 630.03, 945.17 and 219.15 is: 328.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.03 : 945.17 = 219.15 : x
  2. Step 2: Convert to fraction form
    630.03/945.17 = 219.15/x
  3. Step 3: Cross multiply
    630.03x = 945.17 × 219.15
  4. Step 4: Simplify right side
    630.03x = 207,132.91
  5. Step 5: Solve for x
    x = 207,132.91/630.03
  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.