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Finding the Fourth Proportional to 553.99, 764.45 and 344.14

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Solution

The fourth proportional to 553.99, 764.45 and 344.14 is: 474.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.99 : 764.45 = 344.14 : x
  2. Step 2: Convert to fraction form
    553.99/764.45 = 344.14/x
  3. Step 3: Cross multiply
    553.99x = 764.45 × 344.14
  4. Step 4: Simplify right side
    553.99x = 263,074.19
  5. Step 5: Solve for x
    x = 263,074.19/553.99
  6. Step 6: Final answer
    x = 474.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.