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Finding the Fourth Proportional to 630.97, 946.57 and 220.12

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Solution

The fourth proportional to 630.97, 946.57 and 220.12 is: 330.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.97 : 946.57 = 220.12 : x
  2. Step 2: Convert to fraction form
    630.97/946.57 = 220.12/x
  3. Step 3: Cross multiply
    630.97x = 946.57 × 220.12
  4. Step 4: Simplify right side
    630.97x = 208,358.99
  5. Step 5: Solve for x
    x = 208,358.99/630.97
  6. Step 6: Final answer
    x = 330.22

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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.