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Finding the Fourth Proportional to 995.53, 1,493.30 and 418.03

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Solution

The fourth proportional to 995.53, 1,493.30 and 418.03 is: 627.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.53 : 1,493.30 = 418.03 : x
  2. Step 2: Convert to fraction form
    995.53/1,493.30 = 418.03/x
  3. Step 3: Cross multiply
    995.53x = 1,493.30 × 418.03
  4. Step 4: Simplify right side
    995.53x = 624,242.11
  5. Step 5: Solve for x
    x = 624,242.11/995.53
  6. Step 6: Final answer
    x = 627.05

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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.