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Finding the Fourth Proportional to 600.05, 900.13 and 438.76

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Solution

The fourth proportional to 600.05, 900.13 and 438.76 is: 658.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    600.05 : 900.13 = 438.76 : x
  2. Step 2: Convert to fraction form
    600.05/900.13 = 438.76/x
  3. Step 3: Cross multiply
    600.05x = 900.13 × 438.76
  4. Step 4: Simplify right side
    600.05x = 394,938.85
  5. Step 5: Solve for x
    x = 394,938.85/600.05
  6. Step 6: Final answer
    x = 658.18

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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.