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Finding the Fourth Proportional to 693.03, 949.10 and 683.92

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Solution

The fourth proportional to 693.03, 949.10 and 683.92 is: 936.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.03 : 949.10 = 683.92 : x
  2. Step 2: Convert to fraction form
    693.03/949.10 = 683.92/x
  3. Step 3: Cross multiply
    693.03x = 949.10 × 683.92
  4. Step 4: Simplify right side
    693.03x = 649,105.24
  5. Step 5: Solve for x
    x = 649,105.24/693.03
  6. Step 6: Final answer
    x = 936.62

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.