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Finding the Fourth Proportional to 437.39, 655.17 and 272.35

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Solution

The fourth proportional to 437.39, 655.17 and 272.35 is: 407.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.39 : 655.17 = 272.35 : x
  2. Step 2: Convert to fraction form
    437.39/655.17 = 272.35/x
  3. Step 3: Cross multiply
    437.39x = 655.17 × 272.35
  4. Step 4: Simplify right side
    437.39x = 178,435.55
  5. Step 5: Solve for x
    x = 178,435.55/437.39
  6. Step 6: Final answer
    x = 407.96

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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.