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Finding the Fourth Proportional to 995.72, 1,493.72 and 371.08

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Solution

The fourth proportional to 995.72, 1,493.72 and 371.08 is: 556.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.72 : 1,493.72 = 371.08 : x
  2. Step 2: Convert to fraction form
    995.72/1,493.72 = 371.08/x
  3. Step 3: Cross multiply
    995.72x = 1,493.72 × 371.08
  4. Step 4: Simplify right side
    995.72x = 554,289.62
  5. Step 5: Solve for x
    x = 554,289.62/995.72
  6. Step 6: Final answer
    x = 556.67

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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.