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Finding the Fourth Proportional to 401.99, 553.05 and 364.73

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Solution

The fourth proportional to 401.99, 553.05 and 364.73 is: 501.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.99 : 553.05 = 364.73 : x
  2. Step 2: Convert to fraction form
    401.99/553.05 = 364.73/x
  3. Step 3: Cross multiply
    401.99x = 553.05 × 364.73
  4. Step 4: Simplify right side
    401.99x = 201,711.16
  5. Step 5: Solve for x
    x = 201,711.16/401.99
  6. Step 6: Final answer
    x = 501.79

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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.