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Finding the Fourth Proportional to 438.19, 604.66 and 272.44

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Solution

The fourth proportional to 438.19, 604.66 and 272.44 is: 375.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.19 : 604.66 = 272.44 : x
  2. Step 2: Convert to fraction form
    438.19/604.66 = 272.44/x
  3. Step 3: Cross multiply
    438.19x = 604.66 × 272.44
  4. Step 4: Simplify right side
    438.19x = 164,733.57
  5. Step 5: Solve for x
    x = 164,733.57/438.19
  6. Step 6: Final answer
    x = 375.94

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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.