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Finding the Fourth Proportional to 438.35, 604.64 and 344.94

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Solution

The fourth proportional to 438.35, 604.64 and 344.94 is: 475.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.35 : 604.64 = 344.94 : x
  2. Step 2: Convert to fraction form
    438.35/604.64 = 344.94/x
  3. Step 3: Cross multiply
    438.35x = 604.64 × 344.94
  4. Step 4: Simplify right side
    438.35x = 208,562.80
  5. Step 5: Solve for x
    x = 208,562.80/438.35
  6. Step 6: Final answer
    x = 475.80

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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.