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Finding the Fourth Proportional to 994.45, 1,492.08 and 446.26

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Solution

The fourth proportional to 994.45, 1,492.08 and 446.26 is: 669.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.45 : 1,492.08 = 446.26 : x
  2. Step 2: Convert to fraction form
    994.45/1,492.08 = 446.26/x
  3. Step 3: Cross multiply
    994.45x = 1,492.08 × 446.26
  4. Step 4: Simplify right side
    994.45x = 665,855.62
  5. Step 5: Solve for x
    x = 665,855.62/994.45
  6. Step 6: Final answer
    x = 669.57

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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.