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Finding the Fourth Proportional to 443.93, 665.99 and 135.76

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Solution

The fourth proportional to 443.93, 665.99 and 135.76 is: 203.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.93 : 665.99 = 135.76 : x
  2. Step 2: Convert to fraction form
    443.93/665.99 = 135.76/x
  3. Step 3: Cross multiply
    443.93x = 665.99 × 135.76
  4. Step 4: Simplify right side
    443.93x = 90,414.98
  5. Step 5: Solve for x
    x = 90,414.98/443.93
  6. Step 6: Final answer
    x = 203.67

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.