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Finding the Fourth Proportional to 438.05, 603.36 and 350.57

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Solution

The fourth proportional to 438.05, 603.36 and 350.57 is: 482.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.05 : 603.36 = 350.57 : x
  2. Step 2: Convert to fraction form
    438.05/603.36 = 350.57/x
  3. Step 3: Cross multiply
    438.05x = 603.36 × 350.57
  4. Step 4: Simplify right side
    438.05x = 211,516.90
  5. Step 5: Solve for x
    x = 211,516.90/438.05
  6. Step 6: Final answer
    x = 482.87

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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.