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Finding the Fourth Proportional to 343.68, 514.44 and 271.68

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Solution

The fourth proportional to 343.68, 514.44 and 271.68 is: 406.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.68 : 514.44 = 271.68 : x
  2. Step 2: Convert to fraction form
    343.68/514.44 = 271.68/x
  3. Step 3: Cross multiply
    343.68x = 514.44 × 271.68
  4. Step 4: Simplify right side
    343.68x = 139,763.06
  5. Step 5: Solve for x
    x = 139,763.06/343.68
  6. Step 6: Final answer
    x = 406.67

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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.