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Finding the Fourth Proportional to 630.84, 945.54 and 338.12

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Solution

The fourth proportional to 630.84, 945.54 and 338.12 is: 506.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.84 : 945.54 = 338.12 : x
  2. Step 2: Convert to fraction form
    630.84/945.54 = 338.12/x
  3. Step 3: Cross multiply
    630.84x = 945.54 × 338.12
  4. Step 4: Simplify right side
    630.84x = 319,705.98
  5. Step 5: Solve for x
    x = 319,705.98/630.84
  6. Step 6: Final answer
    x = 506.79

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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.