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Finding the Fourth Proportional to 500.11, 748.73 and 418.03

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Solution

The fourth proportional to 500.11, 748.73 and 418.03 is: 625.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.11 : 748.73 = 418.03 : x
  2. Step 2: Convert to fraction form
    500.11/748.73 = 418.03/x
  3. Step 3: Cross multiply
    500.11x = 748.73 × 418.03
  4. Step 4: Simplify right side
    500.11x = 312,989.51
  5. Step 5: Solve for x
    x = 312,989.51/500.11
  6. Step 6: Final answer
    x = 625.84

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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.