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Finding the Fourth Proportional to 996.01, 1,492.76 and 630.90

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Solution

The fourth proportional to 996.01, 1,492.76 and 630.90 is: 945.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.01 : 1,492.76 = 630.90 : x
  2. Step 2: Convert to fraction form
    996.01/1,492.76 = 630.90/x
  3. Step 3: Cross multiply
    996.01x = 1,492.76 × 630.90
  4. Step 4: Simplify right side
    996.01x = 941,783.86
  5. Step 5: Solve for x
    x = 941,783.86/996.01
  6. Step 6: Final answer
    x = 945.56

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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.