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Finding the Fourth Proportional to 994.60, 1,492.44 and 629.56

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Solution

The fourth proportional to 994.60, 1,492.44 and 629.56 is: 944.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.60 : 1,492.44 = 629.56 : x
  2. Step 2: Convert to fraction form
    994.60/1,492.44 = 629.56/x
  3. Step 3: Cross multiply
    994.60x = 1,492.44 × 629.56
  4. Step 4: Simplify right side
    994.60x = 939,580.53
  5. Step 5: Solve for x
    x = 939,580.53/994.60
  6. Step 6: Final answer
    x = 944.68

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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.