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Finding the Fourth Proportional to 630.80, 945.68 and 283.96

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Solution

The fourth proportional to 630.80, 945.68 and 283.96 is: 425.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.80 : 945.68 = 283.96 : x
  2. Step 2: Convert to fraction form
    630.80/945.68 = 283.96/x
  3. Step 3: Cross multiply
    630.80x = 945.68 × 283.96
  4. Step 4: Simplify right side
    630.80x = 268,535.29
  5. Step 5: Solve for x
    x = 268,535.29/630.80
  6. Step 6: Final answer
    x = 425.71

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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.